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Finding the Fourth Proportional to 15,134.50, 20,888.49 and 8,510.50

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Solution

The fourth proportional to 15,134.50, 20,888.49 and 8,510.50 is: 11,746.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,134.50 : 20,888.49 = 8,510.50 : x
  2. Step 2: Convert to fraction form
    15,134.50/20,888.49 = 8,510.50/x
  3. Step 3: Cross multiply
    15,134.50x = 20,888.49 × 8,510.50
  4. Step 4: Simplify right side
    15,134.50x = 177,771,494.15
  5. Step 5: Solve for x
    x = 177,771,494.15/15,134.50
  6. Step 6: Final answer
    x = 11,746.11

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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.