Home / 12,648.32-17,455.68-7,344.80

Finding the Fourth Proportional to 12,648.32, 17,455.68 and 7,344.80

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Solution

The fourth proportional to 12,648.32, 17,455.68 and 7,344.80 is: 10,136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.32 : 17,455.68 = 7,344.80 : x
  2. Step 2: Convert to fraction form
    12,648.32/17,455.68 = 7,344.80/x
  3. Step 3: Cross multiply
    12,648.32x = 17,455.68 × 7,344.80
  4. Step 4: Simplify right side
    12,648.32x = 128,208,478.46
  5. Step 5: Solve for x
    x = 128,208,478.46/12,648.32
  6. Step 6: Final answer
    x = 10,136.40

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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.