Home / 42,157.20-63,239.40-12,573.12

Finding the Fourth Proportional to 42,157.20, 63,239.40 and 12,573.12

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Solution

The fourth proportional to 42,157.20, 63,239.40 and 12,573.12 is: 18,860.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,157.20 : 63,239.40 = 12,573.12 : x
  2. Step 2: Convert to fraction form
    42,157.20/63,239.40 = 12,573.12/x
  3. Step 3: Cross multiply
    42,157.20x = 63,239.40 × 12,573.12
  4. Step 4: Simplify right side
    42,157.20x = 795,116,564.93
  5. Step 5: Solve for x
    x = 795,116,564.93/42,157.20
  6. Step 6: Final answer
    x = 18,860.75

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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.