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Finding the Fourth Proportional to 12,697.47, 17,520.23 and 7,318.67

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Solution

The fourth proportional to 12,697.47, 17,520.23 and 7,318.67 is: 10,098.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,697.47 : 17,520.23 = 7,318.67 : x
  2. Step 2: Convert to fraction form
    12,697.47/17,520.23 = 7,318.67/x
  3. Step 3: Cross multiply
    12,697.47x = 17,520.23 × 7,318.67
  4. Step 4: Simplify right side
    12,697.47x = 128,224,712.39
  5. Step 5: Solve for x
    x = 128,224,712.39/12,697.47
  6. Step 6: Final answer
    x = 10,098.45

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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.