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Finding the Fourth Proportional to 13,069.64, 18,030.12 and 9,877.16

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Solution

The fourth proportional to 13,069.64, 18,030.12 and 9,877.16 is: 13,625.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,069.64 : 18,030.12 = 9,877.16 : x
  2. Step 2: Convert to fraction form
    13,069.64/18,030.12 = 9,877.16/x
  3. Step 3: Cross multiply
    13,069.64x = 18,030.12 × 9,877.16
  4. Step 4: Simplify right side
    13,069.64x = 178,086,380.06
  5. Step 5: Solve for x
    x = 178,086,380.06/13,069.64
  6. Step 6: Final answer
    x = 13,625.96

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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.