Home / 42,370.62-63,531.21-12,779.58

Finding the Fourth Proportional to 42,370.62, 63,531.21 and 12,779.58

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Solution

The fourth proportional to 42,370.62, 63,531.21 and 12,779.58 is: 19,161.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,370.62 : 63,531.21 = 12,779.58 : x
  2. Step 2: Convert to fraction form
    42,370.62/63,531.21 = 12,779.58/x
  3. Step 3: Cross multiply
    42,370.62x = 63,531.21 × 12,779.58
  4. Step 4: Simplify right side
    42,370.62x = 811,902,180.69
  5. Step 5: Solve for x
    x = 811,902,180.69/42,370.62
  6. Step 6: Final answer
    x = 19,161.91

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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.