Home / 15,311.01-21,123.76-10,008.88

Finding the Fourth Proportional to 15,311.01, 21,123.76 and 10,008.88

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Solution

The fourth proportional to 15,311.01, 21,123.76 and 10,008.88 is: 13,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.01 : 21,123.76 = 10,008.88 : x
  2. Step 2: Convert to fraction form
    15,311.01/21,123.76 = 10,008.88/x
  3. Step 3: Cross multiply
    15,311.01x = 21,123.76 × 10,008.88
  4. Step 4: Simplify right side
    15,311.01x = 211,425,178.99
  5. Step 5: Solve for x
    x = 211,425,178.99/15,311.01
  6. Step 6: Final answer
    x = 13,808.70

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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.