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Finding the Fourth Proportional to 39,139.69, 58,719.25 and 11,437.69

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Solution

The fourth proportional to 39,139.69, 58,719.25 and 11,437.69 is: 17,159.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,139.69 : 58,719.25 = 11,437.69 : x
  2. Step 2: Convert to fraction form
    39,139.69/58,719.25 = 11,437.69/x
  3. Step 3: Cross multiply
    39,139.69x = 58,719.25 × 11,437.69
  4. Step 4: Simplify right side
    39,139.69x = 671,612,578.53
  5. Step 5: Solve for x
    x = 671,612,578.53/39,139.69
  6. Step 6: Final answer
    x = 17,159.37

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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.