Home / 18,287.11-25,236.20-9,903.61

Finding the Fourth Proportional to 18,287.11, 25,236.20 and 9,903.61

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Solution

The fourth proportional to 18,287.11, 25,236.20 and 9,903.61 is: 13,666.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.11 : 25,236.20 = 9,903.61 : x
  2. Step 2: Convert to fraction form
    18,287.11/25,236.20 = 9,903.61/x
  3. Step 3: Cross multiply
    18,287.11x = 25,236.20 × 9,903.61
  4. Step 4: Simplify right side
    18,287.11x = 249,929,482.68
  5. Step 5: Solve for x
    x = 249,929,482.68/18,287.11
  6. Step 6: Final answer
    x = 13,666.98

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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.