Home / 13,550.04-20,331.12-8,618.40

Finding the Fourth Proportional to 13,550.04, 20,331.12 and 8,618.40

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Solution

The fourth proportional to 13,550.04, 20,331.12 and 8,618.40 is: 12,931.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.04 : 20,331.12 = 8,618.40 : x
  2. Step 2: Convert to fraction form
    13,550.04/20,331.12 = 8,618.40/x
  3. Step 3: Cross multiply
    13,550.04x = 20,331.12 × 8,618.40
  4. Step 4: Simplify right side
    13,550.04x = 175,221,724.61
  5. Step 5: Solve for x
    x = 175,221,724.61/13,550.04
  6. Step 6: Final answer
    x = 12,931.45

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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.