Home / 20,521.30-30,783.75-15,042.82

Finding the Fourth Proportional to 20,521.30, 30,783.75 and 15,042.82

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Solution

The fourth proportional to 20,521.30, 30,783.75 and 15,042.82 is: 22,565.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.30 : 30,783.75 = 15,042.82 : x
  2. Step 2: Convert to fraction form
    20,521.30/30,783.75 = 15,042.82/x
  3. Step 3: Cross multiply
    20,521.30x = 30,783.75 × 15,042.82
  4. Step 4: Simplify right side
    20,521.30x = 463,074,410.18
  5. Step 5: Solve for x
    x = 463,074,410.18/20,521.30
  6. Step 6: Final answer
    x = 22,565.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.