Home / 20,966.73-28,925.28-13,880.85

Finding the Fourth Proportional to 20,966.73, 28,925.28 and 13,880.85

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Solution

The fourth proportional to 20,966.73, 28,925.28 and 13,880.85 is: 19,149.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.73 : 28,925.28 = 13,880.85 : x
  2. Step 2: Convert to fraction form
    20,966.73/28,925.28 = 13,880.85/x
  3. Step 3: Cross multiply
    20,966.73x = 28,925.28 × 13,880.85
  4. Step 4: Simplify right side
    20,966.73x = 401,507,472.89
  5. Step 5: Solve for x
    x = 401,507,472.89/20,966.73
  6. Step 6: Final answer
    x = 19,149.74

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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.