Home / 12,107.28-16,708.76-9,117.84

Finding the Fourth Proportional to 12,107.28, 16,708.76 and 9,117.84

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Solution

The fourth proportional to 12,107.28, 16,708.76 and 9,117.84 is: 12,583.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.28 : 16,708.76 = 9,117.84 : x
  2. Step 2: Convert to fraction form
    12,107.28/16,708.76 = 9,117.84/x
  3. Step 3: Cross multiply
    12,107.28x = 16,708.76 × 9,117.84
  4. Step 4: Simplify right side
    12,107.28x = 152,347,800.28
  5. Step 5: Solve for x
    x = 152,347,800.28/12,107.28
  6. Step 6: Final answer
    x = 12,583.16

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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.