Home / 42,540.16-63,818-12,954.64

Finding the Fourth Proportional to 42,540.16, 63,818 and 12,954.64

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Solution

The fourth proportional to 42,540.16, 63,818 and 12,954.64 is: 19,434.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,540.16 : 63,818 = 12,954.64 : x
  2. Step 2: Convert to fraction form
    42,540.16/63,818 = 12,954.64/x
  3. Step 3: Cross multiply
    42,540.16x = 63,818 × 12,954.64
  4. Step 4: Simplify right side
    42,540.16x = 826,739,215.52
  5. Step 5: Solve for x
    x = 826,739,215.52/42,540.16
  6. Step 6: Final answer
    x = 19,434.32

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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.