Home / 20,454.10-28,228.79-12,501.62

Finding the Fourth Proportional to 20,454.10, 28,228.79 and 12,501.62

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Solution

The fourth proportional to 20,454.10, 28,228.79 and 12,501.62 is: 17,253.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.10 : 28,228.79 = 12,501.62 : x
  2. Step 2: Convert to fraction form
    20,454.10/28,228.79 = 12,501.62/x
  3. Step 3: Cross multiply
    20,454.10x = 28,228.79 × 12,501.62
  4. Step 4: Simplify right side
    20,454.10x = 352,905,601.61
  5. Step 5: Solve for x
    x = 352,905,601.61/20,454.10
  6. Step 6: Final answer
    x = 17,253.54

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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.