Home / 20,521.05-30,783.38-15,042.57

Finding the Fourth Proportional to 20,521.05, 30,783.38 and 15,042.57

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Solution

The fourth proportional to 20,521.05, 30,783.38 and 15,042.57 is: 22,565.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.05 : 30,783.38 = 15,042.57 : x
  2. Step 2: Convert to fraction form
    20,521.05/30,783.38 = 15,042.57/x
  3. Step 3: Cross multiply
    20,521.05x = 30,783.38 × 15,042.57
  4. Step 4: Simplify right side
    20,521.05x = 463,061,073.27
  5. Step 5: Solve for x
    x = 463,061,073.27/20,521.05
  6. Step 6: Final answer
    x = 22,565.17

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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.