Home / 15,499.68-21,389.11-8,785.93

Finding the Fourth Proportional to 15,499.68, 21,389.11 and 8,785.93

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Solution

The fourth proportional to 15,499.68, 21,389.11 and 8,785.93 is: 12,124.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.68 : 21,389.11 = 8,785.93 : x
  2. Step 2: Convert to fraction form
    15,499.68/21,389.11 = 8,785.93/x
  3. Step 3: Cross multiply
    15,499.68x = 21,389.11 × 8,785.93
  4. Step 4: Simplify right side
    15,499.68x = 187,923,223.22
  5. Step 5: Solve for x
    x = 187,923,223.22/15,499.68
  6. Step 6: Final answer
    x = 12,124.33

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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.