Home / 28,211.86-38,930.83-15,465.04

Finding the Fourth Proportional to 28,211.86, 38,930.83 and 15,465.04

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Solution

The fourth proportional to 28,211.86, 38,930.83 and 15,465.04 is: 21,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.86 : 38,930.83 = 15,465.04 : x
  2. Step 2: Convert to fraction form
    28,211.86/38,930.83 = 15,465.04/x
  3. Step 3: Cross multiply
    28,211.86x = 38,930.83 × 15,465.04
  4. Step 4: Simplify right side
    28,211.86x = 602,066,843.18
  5. Step 5: Solve for x
    x = 602,066,843.18/28,211.86
  6. Step 6: Final answer
    x = 21,340.91

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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.