Home / 12,113.28-16,713.34-7,077.92

Finding the Fourth Proportional to 12,113.28, 16,713.34 and 7,077.92

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Solution

The fourth proportional to 12,113.28, 16,713.34 and 7,077.92 is: 9,765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.28 : 16,713.34 = 7,077.92 : x
  2. Step 2: Convert to fraction form
    12,113.28/16,713.34 = 7,077.92/x
  3. Step 3: Cross multiply
    12,113.28x = 16,713.34 × 7,077.92
  4. Step 4: Simplify right side
    12,113.28x = 118,295,582.19
  5. Step 5: Solve for x
    x = 118,295,582.19/12,113.28
  6. Step 6: Final answer
    x = 9,765.78

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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.