Home / 15,021.38-20,730.29-8,648.93

Finding the Fourth Proportional to 15,021.38, 20,730.29 and 8,648.93

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Solution

The fourth proportional to 15,021.38, 20,730.29 and 8,648.93 is: 11,935.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.38 : 20,730.29 = 8,648.93 : x
  2. Step 2: Convert to fraction form
    15,021.38/20,730.29 = 8,648.93/x
  3. Step 3: Cross multiply
    15,021.38x = 20,730.29 × 8,648.93
  4. Step 4: Simplify right side
    15,021.38x = 179,294,680.19
  5. Step 5: Solve for x
    x = 179,294,680.19/15,021.38
  6. Step 6: Final answer
    x = 11,935.97

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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.