Home / 16,422.90-22,499.45-15,807.89

Finding the Fourth Proportional to 16,422.90, 22,499.45 and 15,807.89

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Solution

The fourth proportional to 16,422.90, 22,499.45 and 15,807.89 is: 21,656.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,422.90 : 22,499.45 = 15,807.89 : x
  2. Step 2: Convert to fraction form
    16,422.90/22,499.45 = 15,807.89/x
  3. Step 3: Cross multiply
    16,422.90x = 22,499.45 × 15,807.89
  4. Step 4: Simplify right side
    16,422.90x = 355,668,830.66
  5. Step 5: Solve for x
    x = 355,668,830.66/16,422.90
  6. Step 6: Final answer
    x = 21,656.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.