Home / 18,718.47-25,831.08-10,220.76

Finding the Fourth Proportional to 18,718.47, 25,831.08 and 10,220.76

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Solution

The fourth proportional to 18,718.47, 25,831.08 and 10,220.76 is: 14,104.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.47 : 25,831.08 = 10,220.76 : x
  2. Step 2: Convert to fraction form
    18,718.47/25,831.08 = 10,220.76/x
  3. Step 3: Cross multiply
    18,718.47x = 25,831.08 × 10,220.76
  4. Step 4: Simplify right side
    18,718.47x = 264,013,269.22
  5. Step 5: Solve for x
    x = 264,013,269.22/18,718.47
  6. Step 6: Final answer
    x = 14,104.43

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Half scale
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Double scale
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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.