Home / 12,909.12-19,363.74-3,549.28

Finding the Fourth Proportional to 12,909.12, 19,363.74 and 3,549.28

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Solution

The fourth proportional to 12,909.12, 19,363.74 and 3,549.28 is: 5,323.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.12 : 19,363.74 = 3,549.28 : x
  2. Step 2: Convert to fraction form
    12,909.12/19,363.74 = 3,549.28/x
  3. Step 3: Cross multiply
    12,909.12x = 19,363.74 × 3,549.28
  4. Step 4: Simplify right side
    12,909.12x = 68,727,335.11
  5. Step 5: Solve for x
    x = 68,727,335.11/12,909.12
  6. Step 6: Final answer
    x = 5,323.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.