Home / 19,658.20-27,162.86-15,711.88

Finding the Fourth Proportional to 19,658.20, 27,162.86 and 15,711.88

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Solution

The fourth proportional to 19,658.20, 27,162.86 and 15,711.88 is: 21,710.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.20 : 27,162.86 = 15,711.88 : x
  2. Step 2: Convert to fraction form
    19,658.20/27,162.86 = 15,711.88/x
  3. Step 3: Cross multiply
    19,658.20x = 27,162.86 × 15,711.88
  4. Step 4: Simplify right side
    19,658.20x = 426,779,596.78
  5. Step 5: Solve for x
    x = 426,779,596.78/19,658.20
  6. Step 6: Final answer
    x = 21,710.00

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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.