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Finding the Fourth Proportional to 18,047.68, 24,904.80 and 9,980.88

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Solution

The fourth proportional to 18,047.68, 24,904.80 and 9,980.88 is: 13,773.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,047.68 : 24,904.80 = 9,980.88 : x
  2. Step 2: Convert to fraction form
    18,047.68/24,904.80 = 9,980.88/x
  3. Step 3: Cross multiply
    18,047.68x = 24,904.80 × 9,980.88
  4. Step 4: Simplify right side
    18,047.68x = 248,571,820.22
  5. Step 5: Solve for x
    x = 248,571,820.22/18,047.68
  6. Step 6: Final answer
    x = 13,773.06

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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.