Home / 15,808.15-21,816.30-10,499.41

Finding the Fourth Proportional to 15,808.15, 21,816.30 and 10,499.41

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Solution

The fourth proportional to 15,808.15, 21,816.30 and 10,499.41 is: 14,489.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,808.15 : 21,816.30 = 10,499.41 : x
  2. Step 2: Convert to fraction form
    15,808.15/21,816.30 = 10,499.41/x
  3. Step 3: Cross multiply
    15,808.15x = 21,816.30 × 10,499.41
  4. Step 4: Simplify right side
    15,808.15x = 229,058,278.38
  5. Step 5: Solve for x
    x = 229,058,278.38/15,808.15
  6. Step 6: Final answer
    x = 14,489.89

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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.