Home / 15,042.42-20,756.49-8,326.35

Finding the Fourth Proportional to 15,042.42, 20,756.49 and 8,326.35

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Solution

The fourth proportional to 15,042.42, 20,756.49 and 8,326.35 is: 11,489.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,042.42 : 20,756.49 = 8,326.35 : x
  2. Step 2: Convert to fraction form
    15,042.42/20,756.49 = 8,326.35/x
  3. Step 3: Cross multiply
    15,042.42x = 20,756.49 × 8,326.35
  4. Step 4: Simplify right side
    15,042.42x = 172,825,800.51
  5. Step 5: Solve for x
    x = 172,825,800.51/15,042.42
  6. Step 6: Final answer
    x = 11,489.23

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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.