Home / 42,432.42-63,618.32-19,930.54

Finding the Fourth Proportional to 42,432.42, 63,618.32 and 19,930.54

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Solution

The fourth proportional to 42,432.42, 63,618.32 and 19,930.54 is: 29,881.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,432.42 : 63,618.32 = 19,930.54 : x
  2. Step 2: Convert to fraction form
    42,432.42/63,618.32 = 19,930.54/x
  3. Step 3: Cross multiply
    42,432.42x = 63,618.32 × 19,930.54
  4. Step 4: Simplify right side
    42,432.42x = 1,267,947,471.49
  5. Step 5: Solve for x
    x = 1,267,947,471.49/42,432.42
  6. Step 6: Final answer
    x = 29,881.57

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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.