Home / 22,688.80-31,311.76-13,262.88

Finding the Fourth Proportional to 22,688.80, 31,311.76 and 13,262.88

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Solution

The fourth proportional to 22,688.80, 31,311.76 and 13,262.88 is: 18,303.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,688.80 : 31,311.76 = 13,262.88 : x
  2. Step 2: Convert to fraction form
    22,688.80/31,311.76 = 13,262.88/x
  3. Step 3: Cross multiply
    22,688.80x = 31,311.76 × 13,262.88
  4. Step 4: Simplify right side
    22,688.80x = 415,284,115.47
  5. Step 5: Solve for x
    x = 415,284,115.47/22,688.80
  6. Step 6: Final answer
    x = 18,303.49

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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.