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Finding the Fourth Proportional to 15,089.57, 20,824.50 and 8,717.33

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Solution

The fourth proportional to 15,089.57, 20,824.50 and 8,717.33 is: 12,030.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,089.57 : 20,824.50 = 8,717.33 : x
  2. Step 2: Convert to fraction form
    15,089.57/20,824.50 = 8,717.33/x
  3. Step 3: Cross multiply
    15,089.57x = 20,824.50 × 8,717.33
  4. Step 4: Simplify right side
    15,089.57x = 181,533,934.46
  5. Step 5: Solve for x
    x = 181,533,934.46/15,089.57
  6. Step 6: Final answer
    x = 12,030.43

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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.