Home / 20,895.06-31,341.42-15,278.48

Finding the Fourth Proportional to 20,895.06, 31,341.42 and 15,278.48

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Solution

The fourth proportional to 20,895.06, 31,341.42 and 15,278.48 is: 22,916.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.06 : 31,341.42 = 15,278.48 : x
  2. Step 2: Convert to fraction form
    20,895.06/31,341.42 = 15,278.48/x
  3. Step 3: Cross multiply
    20,895.06x = 31,341.42 × 15,278.48
  4. Step 4: Simplify right side
    20,895.06x = 478,849,101.93
  5. Step 5: Solve for x
    x = 478,849,101.93/20,895.06
  6. Step 6: Final answer
    x = 22,916.86

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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.