Home / 12,515.18-17,269.24-7,478.34

Finding the Fourth Proportional to 12,515.18, 17,269.24 and 7,478.34

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Solution

The fourth proportional to 12,515.18, 17,269.24 and 7,478.34 is: 10,319.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.18 : 17,269.24 = 7,478.34 : x
  2. Step 2: Convert to fraction form
    12,515.18/17,269.24 = 7,478.34/x
  3. Step 3: Cross multiply
    12,515.18x = 17,269.24 × 7,478.34
  4. Step 4: Simplify right side
    12,515.18x = 129,145,124.52
  5. Step 5: Solve for x
    x = 129,145,124.52/12,515.18
  6. Step 6: Final answer
    x = 10,319.08

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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.