Home / 12,447.04-17,171.36-7,140.80

Finding the Fourth Proportional to 12,447.04, 17,171.36 and 7,140.80

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Solution

The fourth proportional to 12,447.04, 17,171.36 and 7,140.80 is: 9,851.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447.04 : 17,171.36 = 7,140.80 : x
  2. Step 2: Convert to fraction form
    12,447.04/17,171.36 = 7,140.80/x
  3. Step 3: Cross multiply
    12,447.04x = 17,171.36 × 7,140.80
  4. Step 4: Simplify right side
    12,447.04x = 122,617,247.49
  5. Step 5: Solve for x
    x = 122,617,247.49/12,447.04
  6. Step 6: Final answer
    x = 9,851.12

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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.