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Finding the Fourth Proportional to 18,220.93, 25,140.47 and 10,263.15

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Solution

The fourth proportional to 18,220.93, 25,140.47 and 10,263.15 is: 14,160.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.93 : 25,140.47 = 10,263.15 : x
  2. Step 2: Convert to fraction form
    18,220.93/25,140.47 = 10,263.15/x
  3. Step 3: Cross multiply
    18,220.93x = 25,140.47 × 10,263.15
  4. Step 4: Simplify right side
    18,220.93x = 258,020,363.36
  5. Step 5: Solve for x
    x = 258,020,363.36/18,220.93
  6. Step 6: Final answer
    x = 14,160.66

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Half scale
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Double scale
Find fourth proportional to 18,221.93, 25,141.84 and 10,264.15
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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.