Home / 42,987.30-64,442.07-15,278.82

Finding the Fourth Proportional to 42,987.30, 64,442.07 and 15,278.82

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Solution

The fourth proportional to 42,987.30, 64,442.07 and 15,278.82 is: 22,904.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,987.30 : 64,442.07 = 15,278.82 : x
  2. Step 2: Convert to fraction form
    42,987.30/64,442.07 = 15,278.82/x
  3. Step 3: Cross multiply
    42,987.30x = 64,442.07 × 15,278.82
  4. Step 4: Simplify right side
    42,987.30x = 984,598,787.96
  5. Step 5: Solve for x
    x = 984,598,787.96/42,987.30
  6. Step 6: Final answer
    x = 22,904.41

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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.