Home / 18,287.72-25,236.90-9,904.22

Finding the Fourth Proportional to 18,287.72, 25,236.90 and 9,904.22

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Solution

The fourth proportional to 18,287.72, 25,236.90 and 9,904.22 is: 13,667.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.72 : 25,236.90 = 9,904.22 : x
  2. Step 2: Convert to fraction form
    18,287.72/25,236.90 = 9,904.22/x
  3. Step 3: Cross multiply
    18,287.72x = 25,236.90 × 9,904.22
  4. Step 4: Simplify right side
    18,287.72x = 249,951,683.53
  5. Step 5: Solve for x
    x = 249,951,683.53/18,287.72
  6. Step 6: Final answer
    x = 13,667.74

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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.