Home / 13,555.04-20,339.12-7,398.88

Finding the Fourth Proportional to 13,555.04, 20,339.12 and 7,398.88

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Solution

The fourth proportional to 13,555.04, 20,339.12 and 7,398.88 is: 11,101.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.04 : 20,339.12 = 7,398.88 : x
  2. Step 2: Convert to fraction form
    13,555.04/20,339.12 = 7,398.88/x
  3. Step 3: Cross multiply
    13,555.04x = 20,339.12 × 7,398.88
  4. Step 4: Simplify right side
    13,555.04x = 150,486,708.19
  5. Step 5: Solve for x
    x = 150,486,708.19/13,555.04
  6. Step 6: Final answer
    x = 11,101.90

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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.