Home / 12,881.85-17,778.60-7,577.16

Finding the Fourth Proportional to 12,881.85, 17,778.60 and 7,577.16

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Solution

The fourth proportional to 12,881.85, 17,778.60 and 7,577.16 is: 10,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.85 : 17,778.60 = 7,577.16 : x
  2. Step 2: Convert to fraction form
    12,881.85/17,778.60 = 7,577.16/x
  3. Step 3: Cross multiply
    12,881.85x = 17,778.60 × 7,577.16
  4. Step 4: Simplify right side
    12,881.85x = 134,711,296.78
  5. Step 5: Solve for x
    x = 134,711,296.78/12,881.85
  6. Step 6: Final answer
    x = 10,457.45

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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.