Home / 11,218.60-15,489.90-7,242.04

Finding the Fourth Proportional to 11,218.60, 15,489.90 and 7,242.04

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Solution

The fourth proportional to 11,218.60, 15,489.90 and 7,242.04 is: 9,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,218.60 : 15,489.90 = 7,242.04 : x
  2. Step 2: Convert to fraction form
    11,218.60/15,489.90 = 7,242.04/x
  3. Step 3: Cross multiply
    11,218.60x = 15,489.90 × 7,242.04
  4. Step 4: Simplify right side
    11,218.60x = 112,178,475.40
  5. Step 5: Solve for x
    x = 112,178,475.40/11,218.60
  6. Step 6: Final answer
    x = 9,999.33

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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.