Home / 15,301.45-21,115.65-8,586.92

Finding the Fourth Proportional to 15,301.45, 21,115.65 and 8,586.92

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Solution

The fourth proportional to 15,301.45, 21,115.65 and 8,586.92 is: 11,849.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.45 : 21,115.65 = 8,586.92 : x
  2. Step 2: Convert to fraction form
    15,301.45/21,115.65 = 8,586.92/x
  3. Step 3: Cross multiply
    15,301.45x = 21,115.65 × 8,586.92
  4. Step 4: Simplify right side
    15,301.45x = 181,318,482.29
  5. Step 5: Solve for x
    x = 181,318,482.29/15,301.45
  6. Step 6: Final answer
    x = 11,849.76

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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.