Home / 42,432.72-63,631.74-18,418.56

Finding the Fourth Proportional to 42,432.72, 63,631.74 and 18,418.56

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Solution

The fourth proportional to 42,432.72, 63,631.74 and 18,418.56 is: 27,620.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,432.72 : 63,631.74 = 18,418.56 : x
  2. Step 2: Convert to fraction form
    42,432.72/63,631.74 = 18,418.56/x
  3. Step 3: Cross multiply
    42,432.72x = 63,631.74 × 18,418.56
  4. Step 4: Simplify right side
    42,432.72x = 1,172,005,021.09
  5. Step 5: Solve for x
    x = 1,172,005,021.09/42,432.72
  6. Step 6: Final answer
    x = 27,620.31

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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.