Home / 18,287.28-25,236.48-9,903.72

Finding the Fourth Proportional to 18,287.28, 25,236.48 and 9,903.72

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Solution

The fourth proportional to 18,287.28, 25,236.48 and 9,903.72 is: 13,667.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.28 : 25,236.48 = 9,903.72 : x
  2. Step 2: Convert to fraction form
    18,287.28/25,236.48 = 9,903.72/x
  3. Step 3: Cross multiply
    18,287.28x = 25,236.48 × 9,903.72
  4. Step 4: Simplify right side
    18,287.28x = 249,935,031.71
  5. Step 5: Solve for x
    x = 249,935,031.71/18,287.28
  6. Step 6: Final answer
    x = 13,667.15

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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.