Home / 20,942.06-28,870.17-14,971.55

Finding the Fourth Proportional to 20,942.06, 28,870.17 and 14,971.55

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Solution

The fourth proportional to 20,942.06, 28,870.17 and 14,971.55 is: 20,639.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.06 : 28,870.17 = 14,971.55 : x
  2. Step 2: Convert to fraction form
    20,942.06/28,870.17 = 14,971.55/x
  3. Step 3: Cross multiply
    20,942.06x = 28,870.17 × 14,971.55
  4. Step 4: Simplify right side
    20,942.06x = 432,231,193.66
  5. Step 5: Solve for x
    x = 432,231,193.66/20,942.06
  6. Step 6: Final answer
    x = 20,639.38

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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.