Home / 42,909.75-64,374.36-15,207.75

Finding the Fourth Proportional to 42,909.75, 64,374.36 and 15,207.75

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Solution

The fourth proportional to 42,909.75, 64,374.36 and 15,207.75 is: 22,815.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,909.75 : 64,374.36 = 15,207.75 : x
  2. Step 2: Convert to fraction form
    42,909.75/64,374.36 = 15,207.75/x
  3. Step 3: Cross multiply
    42,909.75x = 64,374.36 × 15,207.75
  4. Step 4: Simplify right side
    42,909.75x = 978,989,173.29
  5. Step 5: Solve for x
    x = 978,989,173.29/42,909.75
  6. Step 6: Final answer
    x = 22,815.08

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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.