Home / 12,440.40-17,165.04-7,962.48

Finding the Fourth Proportional to 12,440.40, 17,165.04 and 7,962.48

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Solution

The fourth proportional to 12,440.40, 17,165.04 and 7,962.48 is: 10,986.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.40 : 17,165.04 = 7,962.48 : x
  2. Step 2: Convert to fraction form
    12,440.40/17,165.04 = 7,962.48/x
  3. Step 3: Cross multiply
    12,440.40x = 17,165.04 × 7,962.48
  4. Step 4: Simplify right side
    12,440.40x = 136,676,287.70
  5. Step 5: Solve for x
    x = 136,676,287.70/12,440.40
  6. Step 6: Final answer
    x = 10,986.49

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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.