Home / 39,785.09-59,665.43-13,126.16

Finding the Fourth Proportional to 39,785.09, 59,665.43 and 13,126.16

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Solution

The fourth proportional to 39,785.09, 59,665.43 and 13,126.16 is: 19,685.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,785.09 : 59,665.43 = 13,126.16 : x
  2. Step 2: Convert to fraction form
    39,785.09/59,665.43 = 13,126.16/x
  3. Step 3: Cross multiply
    39,785.09x = 59,665.43 × 13,126.16
  4. Step 4: Simplify right side
    39,785.09x = 783,177,616.69
  5. Step 5: Solve for x
    x = 783,177,616.69/39,785.09
  6. Step 6: Final answer
    x = 19,685.21

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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.