Home / 20,508.53-28,296.54-12,547.85

Finding the Fourth Proportional to 20,508.53, 28,296.54 and 12,547.85

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Solution

The fourth proportional to 20,508.53, 28,296.54 and 12,547.85 is: 17,312.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.53 : 28,296.54 = 12,547.85 : x
  2. Step 2: Convert to fraction form
    20,508.53/28,296.54 = 12,547.85/x
  3. Step 3: Cross multiply
    20,508.53x = 28,296.54 × 12,547.85
  4. Step 4: Simplify right side
    20,508.53x = 355,060,739.44
  5. Step 5: Solve for x
    x = 355,060,739.44/20,508.53
  6. Step 6: Final answer
    x = 17,312.83

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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.