Home / 18,486.10-25,511.20-10,422.28

Finding the Fourth Proportional to 18,486.10, 25,511.20 and 10,422.28

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Solution

The fourth proportional to 18,486.10, 25,511.20 and 10,422.28 is: 14,382.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.10 : 25,511.20 = 10,422.28 : x
  2. Step 2: Convert to fraction form
    18,486.10/25,511.20 = 10,422.28/x
  3. Step 3: Cross multiply
    18,486.10x = 25,511.20 × 10,422.28
  4. Step 4: Simplify right side
    18,486.10x = 265,884,779.70
  5. Step 5: Solve for x
    x = 265,884,779.70/18,486.10
  6. Step 6: Final answer
    x = 14,382.96

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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.