Home / 18,321.12-25,283.28-9,937.68

Finding the Fourth Proportional to 18,321.12, 25,283.28 and 9,937.68

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Solution

The fourth proportional to 18,321.12, 25,283.28 and 9,937.68 is: 13,714.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.12 : 25,283.28 = 9,937.68 : x
  2. Step 2: Convert to fraction form
    18,321.12/25,283.28 = 9,937.68/x
  3. Step 3: Cross multiply
    18,321.12x = 25,283.28 × 9,937.68
  4. Step 4: Simplify right side
    18,321.12x = 251,257,145.99
  5. Step 5: Solve for x
    x = 251,257,145.99/18,321.12
  6. Step 6: Final answer
    x = 13,714.07

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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.