Home / 18,902.40-28,353.60-9,039.36

Finding the Fourth Proportional to 18,902.40, 28,353.60 and 9,039.36

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Solution

The fourth proportional to 18,902.40, 28,353.60 and 9,039.36 is: 13,559.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.40 : 28,353.60 = 9,039.36 : x
  2. Step 2: Convert to fraction form
    18,902.40/28,353.60 = 9,039.36/x
  3. Step 3: Cross multiply
    18,902.40x = 28,353.60 × 9,039.36
  4. Step 4: Simplify right side
    18,902.40x = 256,298,397.70
  5. Step 5: Solve for x
    x = 256,298,397.70/18,902.40
  6. Step 6: Final answer
    x = 13,559.04

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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.