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Finding the Fourth Proportional to 42,959.69, 64,400.65 and 15,251.21

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Solution

The fourth proportional to 42,959.69, 64,400.65 and 15,251.21 is: 22,863.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,959.69 : 64,400.65 = 15,251.21 : x
  2. Step 2: Convert to fraction form
    42,959.69/64,400.65 = 15,251.21/x
  3. Step 3: Cross multiply
    42,959.69x = 64,400.65 × 15,251.21
  4. Step 4: Simplify right side
    42,959.69x = 982,187,837.29
  5. Step 5: Solve for x
    x = 982,187,837.29/42,959.69
  6. Step 6: Final answer
    x = 22,863.01

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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.