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Finding the Fourth Proportional to 18,045.64, 24,901.96 and 9,978.82

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Solution

The fourth proportional to 18,045.64, 24,901.96 and 9,978.82 is: 13,770.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,045.64 : 24,901.96 = 9,978.82 : x
  2. Step 2: Convert to fraction form
    18,045.64/24,901.96 = 9,978.82/x
  3. Step 3: Cross multiply
    18,045.64x = 24,901.96 × 9,978.82
  4. Step 4: Simplify right side
    18,045.64x = 248,492,176.49
  5. Step 5: Solve for x
    x = 248,492,176.49/18,045.64
  6. Step 6: Final answer
    x = 13,770.21

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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.