Home / 15,552.45-21,462.30-8,478.81

Finding the Fourth Proportional to 15,552.45, 21,462.30 and 8,478.81

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Solution

The fourth proportional to 15,552.45, 21,462.30 and 8,478.81 is: 11,700.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552.45 : 21,462.30 = 8,478.81 : x
  2. Step 2: Convert to fraction form
    15,552.45/21,462.30 = 8,478.81/x
  3. Step 3: Cross multiply
    15,552.45x = 21,462.30 × 8,478.81
  4. Step 4: Simplify right side
    15,552.45x = 181,974,763.86
  5. Step 5: Solve for x
    x = 181,974,763.86/15,552.45
  6. Step 6: Final answer
    x = 11,700.71

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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.