Home / 15,414.48-21,271.62-8,699.92

Finding the Fourth Proportional to 15,414.48, 21,271.62 and 8,699.92

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Solution

The fourth proportional to 15,414.48, 21,271.62 and 8,699.92 is: 12,005.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,414.48 : 21,271.62 = 8,699.92 : x
  2. Step 2: Convert to fraction form
    15,414.48/21,271.62 = 8,699.92/x
  3. Step 3: Cross multiply
    15,414.48x = 21,271.62 × 8,699.92
  4. Step 4: Simplify right side
    15,414.48x = 185,061,392.27
  5. Step 5: Solve for x
    x = 185,061,392.27/15,414.48
  6. Step 6: Final answer
    x = 12,005.69

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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.