Home / 20,732.55-31,210.82-18,895.47

Finding the Fourth Proportional to 20,732.55, 31,210.82 and 18,895.47

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Solution

The fourth proportional to 20,732.55, 31,210.82 and 18,895.47 is: 28,445.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.55 : 31,210.82 = 18,895.47 : x
  2. Step 2: Convert to fraction form
    20,732.55/31,210.82 = 18,895.47/x
  3. Step 3: Cross multiply
    20,732.55x = 31,210.82 × 18,895.47
  4. Step 4: Simplify right side
    20,732.55x = 589,743,160.22
  5. Step 5: Solve for x
    x = 589,743,160.22/20,732.55
  6. Step 6: Final answer
    x = 28,445.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.