Home / 14,581.04-20,120.80-8,612.40

Finding the Fourth Proportional to 14,581.04, 20,120.80 and 8,612.40

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Solution

The fourth proportional to 14,581.04, 20,120.80 and 8,612.40 is: 11,884.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,581.04 : 20,120.80 = 8,612.40 : x
  2. Step 2: Convert to fraction form
    14,581.04/20,120.80 = 8,612.40/x
  3. Step 3: Cross multiply
    14,581.04x = 20,120.80 × 8,612.40
  4. Step 4: Simplify right side
    14,581.04x = 173,288,377.92
  5. Step 5: Solve for x
    x = 173,288,377.92/14,581.04
  6. Step 6: Final answer
    x = 11,884.50

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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.