Home / 18,465.12-25,461.72-12,486.24

Finding the Fourth Proportional to 18,465.12, 25,461.72 and 12,486.24

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Solution

The fourth proportional to 18,465.12, 25,461.72 and 12,486.24 is: 17,217.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,465.12 : 25,461.72 = 12,486.24 : x
  2. Step 2: Convert to fraction form
    18,465.12/25,461.72 = 12,486.24/x
  3. Step 3: Cross multiply
    18,465.12x = 25,461.72 × 12,486.24
  4. Step 4: Simplify right side
    18,465.12x = 317,921,146.73
  5. Step 5: Solve for x
    x = 317,921,146.73/18,465.12
  6. Step 6: Final answer
    x = 17,217.39

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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.