Home / 12,977.28-17,909.12-7,235.25

Finding the Fourth Proportional to 12,977.28, 17,909.12 and 7,235.25

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Solution

The fourth proportional to 12,977.28, 17,909.12 and 7,235.25 is: 9,984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.28 : 17,909.12 = 7,235.25 : x
  2. Step 2: Convert to fraction form
    12,977.28/17,909.12 = 7,235.25/x
  3. Step 3: Cross multiply
    12,977.28x = 17,909.12 × 7,235.25
  4. Step 4: Simplify right side
    12,977.28x = 129,576,960.48
  5. Step 5: Solve for x
    x = 129,576,960.48/12,977.28
  6. Step 6: Final answer
    x = 9,984.91

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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.