Home / 12,776.13-17,639.16-8,749.71

Finding the Fourth Proportional to 12,776.13, 17,639.16 and 8,749.71

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Solution

The fourth proportional to 12,776.13, 17,639.16 and 8,749.71 is: 12,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,776.13 : 17,639.16 = 8,749.71 : x
  2. Step 2: Convert to fraction form
    12,776.13/17,639.16 = 8,749.71/x
  3. Step 3: Cross multiply
    12,776.13x = 17,639.16 × 8,749.71
  4. Step 4: Simplify right side
    12,776.13x = 154,337,534.64
  5. Step 5: Solve for x
    x = 154,337,534.64/12,776.13
  6. Step 6: Final answer
    x = 12,080.15

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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.