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Finding the Fourth Proportional to 42,959.64, 64,411.92 and 18,017.28

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Solution

The fourth proportional to 42,959.64, 64,411.92 and 18,017.28 is: 27,014.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,959.64 : 64,411.92 = 18,017.28 : x
  2. Step 2: Convert to fraction form
    42,959.64/64,411.92 = 18,017.28/x
  3. Step 3: Cross multiply
    42,959.64x = 64,411.92 × 18,017.28
  4. Step 4: Simplify right side
    42,959.64x = 1,160,527,597.98
  5. Step 5: Solve for x
    x = 1,160,527,597.98/42,959.64
  6. Step 6: Final answer
    x = 27,014.37

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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.