Home / 42,967.63-64,451.45-13,387.86

Finding the Fourth Proportional to 42,967.63, 64,451.45 and 13,387.86

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Solution

The fourth proportional to 42,967.63, 64,451.45 and 13,387.86 is: 20,081.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,967.63 : 64,451.45 = 13,387.86 : x
  2. Step 2: Convert to fraction form
    42,967.63/64,451.45 = 13,387.86/x
  3. Step 3: Cross multiply
    42,967.63x = 64,451.45 × 13,387.86
  4. Step 4: Simplify right side
    42,967.63x = 862,866,989.40
  5. Step 5: Solve for x
    x = 862,866,989.40/42,967.63
  6. Step 6: Final answer
    x = 20,081.79

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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.