Home / 15,926.76-21,979.35-9,212.94

Finding the Fourth Proportional to 15,926.76, 21,979.35 and 9,212.94

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Solution

The fourth proportional to 15,926.76, 21,979.35 and 9,212.94 is: 12,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,926.76 : 21,979.35 = 9,212.94 : x
  2. Step 2: Convert to fraction form
    15,926.76/21,979.35 = 9,212.94/x
  3. Step 3: Cross multiply
    15,926.76x = 21,979.35 × 9,212.94
  4. Step 4: Simplify right side
    15,926.76x = 202,494,432.79
  5. Step 5: Solve for x
    x = 202,494,432.79/15,926.76
  6. Step 6: Final answer
    x = 12,714.10

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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.