Home / 42,445.98-63,678.18-12,866.09

Finding the Fourth Proportional to 42,445.98, 63,678.18 and 12,866.09

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Solution

The fourth proportional to 42,445.98, 63,678.18 and 12,866.09 is: 19,301.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,445.98 : 63,678.18 = 12,866.09 : x
  2. Step 2: Convert to fraction form
    42,445.98/63,678.18 = 12,866.09/x
  3. Step 3: Cross multiply
    42,445.98x = 63,678.18 × 12,866.09
  4. Step 4: Simplify right side
    42,445.98x = 819,288,876.53
  5. Step 5: Solve for x
    x = 819,288,876.53/42,445.98
  6. Step 6: Final answer
    x = 19,301.92

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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.