Home / 13,451.20-18,562.40-7,482.81

Finding the Fourth Proportional to 13,451.20, 18,562.40 and 7,482.81

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Solution

The fourth proportional to 13,451.20, 18,562.40 and 7,482.81 is: 10,326.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.20 : 18,562.40 = 7,482.81 : x
  2. Step 2: Convert to fraction form
    13,451.20/18,562.40 = 7,482.81/x
  3. Step 3: Cross multiply
    13,451.20x = 18,562.40 × 7,482.81
  4. Step 4: Simplify right side
    13,451.20x = 138,898,972.60
  5. Step 5: Solve for x
    x = 138,898,972.60/13,451.20
  6. Step 6: Final answer
    x = 10,326.14

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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.