Home / 18,718.48-25,830.60-10,220.92

Finding the Fourth Proportional to 18,718.48, 25,830.60 and 10,220.92

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Solution

The fourth proportional to 18,718.48, 25,830.60 and 10,220.92 is: 14,104.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.48 : 25,830.60 = 10,220.92 : x
  2. Step 2: Convert to fraction form
    18,718.48/25,830.60 = 10,220.92/x
  3. Step 3: Cross multiply
    18,718.48x = 25,830.60 × 10,220.92
  4. Step 4: Simplify right side
    18,718.48x = 264,012,496.15
  5. Step 5: Solve for x
    x = 264,012,496.15/18,718.48
  6. Step 6: Final answer
    x = 14,104.38

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Half scale
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Double scale
Find fourth proportional to 18,719.48, 25,831.98 and 10,221.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.