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Finding the Fourth Proportional to 10,238.70, 15,336.45 and 8,510.70

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Solution

The fourth proportional to 10,238.70, 15,336.45 and 8,510.70 is: 12,748.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,238.70 : 15,336.45 = 8,510.70 : x
  2. Step 2: Convert to fraction form
    10,238.70/15,336.45 = 8,510.70/x
  3. Step 3: Cross multiply
    10,238.70x = 15,336.45 × 8,510.70
  4. Step 4: Simplify right side
    10,238.70x = 130,523,925.02
  5. Step 5: Solve for x
    x = 130,523,925.02/10,238.70
  6. Step 6: Final answer
    x = 12,748.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.