Home / 17,318.30-25,985.10-8,428.70

Finding the Fourth Proportional to 17,318.30, 25,985.10 and 8,428.70

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Solution

The fourth proportional to 17,318.30, 25,985.10 and 8,428.70 is: 12,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,318.30 : 25,985.10 = 8,428.70 : x
  2. Step 2: Convert to fraction form
    17,318.30/25,985.10 = 8,428.70/x
  3. Step 3: Cross multiply
    17,318.30x = 25,985.10 × 8,428.70
  4. Step 4: Simplify right side
    17,318.30x = 219,020,612.37
  5. Step 5: Solve for x
    x = 219,020,612.37/17,318.30
  6. Step 6: Final answer
    x = 12,646.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.