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Finding the Fourth Proportional to 12,913.08, 17,818.58 and 7,247.06

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Solution

The fourth proportional to 12,913.08, 17,818.58 and 7,247.06 is: 10,000.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.08 : 17,818.58 = 7,247.06 : x
  2. Step 2: Convert to fraction form
    12,913.08/17,818.58 = 7,247.06/x
  3. Step 3: Cross multiply
    12,913.08x = 17,818.58 × 7,247.06
  4. Step 4: Simplify right side
    12,913.08x = 129,132,318.37
  5. Step 5: Solve for x
    x = 129,132,318.37/12,913.08
  6. Step 6: Final answer
    x = 10,000.12

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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.