Home / 13,229.12-18,257.28-10,864.64

Finding the Fourth Proportional to 13,229.12, 18,257.28 and 10,864.64

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Solution

The fourth proportional to 13,229.12, 18,257.28 and 10,864.64 is: 14,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,229.12 : 18,257.28 = 10,864.64 : x
  2. Step 2: Convert to fraction form
    13,229.12/18,257.28 = 10,864.64/x
  3. Step 3: Cross multiply
    13,229.12x = 18,257.28 × 10,864.64
  4. Step 4: Simplify right side
    13,229.12x = 198,358,774.58
  5. Step 5: Solve for x
    x = 198,358,774.58/13,229.12
  6. Step 6: Final answer
    x = 14,994.10

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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.