Home / 12,159.55-16,780.23-7,124.66

Finding the Fourth Proportional to 12,159.55, 16,780.23 and 7,124.66

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Solution

The fourth proportional to 12,159.55, 16,780.23 and 7,124.66 is: 9,832.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.55 : 16,780.23 = 7,124.66 : x
  2. Step 2: Convert to fraction form
    12,159.55/16,780.23 = 7,124.66/x
  3. Step 3: Cross multiply
    12,159.55x = 16,780.23 × 7,124.66
  4. Step 4: Simplify right side
    12,159.55x = 119,553,475.42
  5. Step 5: Solve for x
    x = 119,553,475.42/12,159.55
  6. Step 6: Final answer
    x = 9,832.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.