Home / 42,519.48-63,788.40-12,939.63

Finding the Fourth Proportional to 42,519.48, 63,788.40 and 12,939.63

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Solution

The fourth proportional to 42,519.48, 63,788.40 and 12,939.63 is: 19,412.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,519.48 : 63,788.40 = 12,939.63 : x
  2. Step 2: Convert to fraction form
    42,519.48/63,788.40 = 12,939.63/x
  3. Step 3: Cross multiply
    42,519.48x = 63,788.40 × 12,939.63
  4. Step 4: Simplify right side
    42,519.48x = 825,398,294.29
  5. Step 5: Solve for x
    x = 825,398,294.29/42,519.48
  6. Step 6: Final answer
    x = 19,412.24

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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.