Home / 15,553.16-21,462.18-8,479.40

Finding the Fourth Proportional to 15,553.16, 21,462.18 and 8,479.40

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Solution

The fourth proportional to 15,553.16, 21,462.18 and 8,479.40 is: 11,700.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.16 : 21,462.18 = 8,479.40 : x
  2. Step 2: Convert to fraction form
    15,553.16/21,462.18 = 8,479.40/x
  3. Step 3: Cross multiply
    15,553.16x = 21,462.18 × 8,479.40
  4. Step 4: Simplify right side
    15,553.16x = 181,986,409.09
  5. Step 5: Solve for x
    x = 181,986,409.09/15,553.16
  6. Step 6: Final answer
    x = 11,700.93

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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.