Home / 28,364.05-39,154.55-20,192.95

Finding the Fourth Proportional to 28,364.05, 39,154.55 and 20,192.95

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Solution

The fourth proportional to 28,364.05, 39,154.55 and 20,192.95 is: 27,874.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.05 : 39,154.55 = 20,192.95 : x
  2. Step 2: Convert to fraction form
    28,364.05/39,154.55 = 20,192.95/x
  3. Step 3: Cross multiply
    28,364.05x = 39,154.55 × 20,192.95
  4. Step 4: Simplify right side
    28,364.05x = 790,645,870.42
  5. Step 5: Solve for x
    x = 790,645,870.42/28,364.05
  6. Step 6: Final answer
    x = 27,874.93

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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.