Home / 42,107.88-63,161.76-12,525.66

Finding the Fourth Proportional to 42,107.88, 63,161.76 and 12,525.66

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Solution

The fourth proportional to 42,107.88, 63,161.76 and 12,525.66 is: 18,788.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,107.88 : 63,161.76 = 12,525.66 : x
  2. Step 2: Convert to fraction form
    42,107.88/63,161.76 = 12,525.66/x
  3. Step 3: Cross multiply
    42,107.88x = 63,161.76 × 12,525.66
  4. Step 4: Simplify right side
    42,107.88x = 791,142,730.76
  5. Step 5: Solve for x
    x = 791,142,730.76/42,107.88
  6. Step 6: Final answer
    x = 18,788.47

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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.