Home / 18,355.13-25,330.10-9,971.63

Finding the Fourth Proportional to 18,355.13, 25,330.10 and 9,971.63

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Solution

The fourth proportional to 18,355.13, 25,330.10 and 9,971.63 is: 13,760.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.13 : 25,330.10 = 9,971.63 : x
  2. Step 2: Convert to fraction form
    18,355.13/25,330.10 = 9,971.63/x
  3. Step 3: Cross multiply
    18,355.13x = 25,330.10 × 9,971.63
  4. Step 4: Simplify right side
    18,355.13x = 252,582,208.55
  5. Step 5: Solve for x
    x = 252,582,208.55/18,355.13
  6. Step 6: Final answer
    x = 13,760.85

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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.