Home / 42,220.13-63,333.09-14,139.05

Finding the Fourth Proportional to 42,220.13, 63,333.09 and 14,139.05

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Solution

The fourth proportional to 42,220.13, 63,333.09 and 14,139.05 is: 21,209.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,220.13 : 63,333.09 = 14,139.05 : x
  2. Step 2: Convert to fraction form
    42,220.13/63,333.09 = 14,139.05/x
  3. Step 3: Cross multiply
    42,220.13x = 63,333.09 × 14,139.05
  4. Step 4: Simplify right side
    42,220.13x = 895,469,409.50
  5. Step 5: Solve for x
    x = 895,469,409.50/42,220.13
  6. Step 6: Final answer
    x = 21,209.54

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.