Home / 20,894.42-28,830.18-12,394.95

Finding the Fourth Proportional to 20,894.42, 28,830.18 and 12,394.95

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Solution

The fourth proportional to 20,894.42, 28,830.18 and 12,394.95 is: 17,102.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,894.42 : 28,830.18 = 12,394.95 : x
  2. Step 2: Convert to fraction form
    20,894.42/28,830.18 = 12,394.95/x
  3. Step 3: Cross multiply
    20,894.42x = 28,830.18 × 12,394.95
  4. Step 4: Simplify right side
    20,894.42x = 357,348,639.59
  5. Step 5: Solve for x
    x = 357,348,639.59/20,894.42
  6. Step 6: Final answer
    x = 17,102.59

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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.