Home / 13,581.48-18,743.24-7,612.88

Finding the Fourth Proportional to 13,581.48, 18,743.24 and 7,612.88

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Solution

The fourth proportional to 13,581.48, 18,743.24 and 7,612.88 is: 10,506.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.48 : 18,743.24 = 7,612.88 : x
  2. Step 2: Convert to fraction form
    13,581.48/18,743.24 = 7,612.88/x
  3. Step 3: Cross multiply
    13,581.48x = 18,743.24 × 7,612.88
  4. Step 4: Simplify right side
    13,581.48x = 142,690,036.93
  5. Step 5: Solve for x
    x = 142,690,036.93/13,581.48
  6. Step 6: Final answer
    x = 10,506.22

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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.