Home / 28,171.40-42,200.60-13,394.57

Finding the Fourth Proportional to 28,171.40, 42,200.60 and 13,394.57

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Solution

The fourth proportional to 28,171.40, 42,200.60 and 13,394.57 is: 20,064.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171.40 : 42,200.60 = 13,394.57 : x
  2. Step 2: Convert to fraction form
    28,171.40/42,200.60 = 13,394.57/x
  3. Step 3: Cross multiply
    28,171.40x = 42,200.60 × 13,394.57
  4. Step 4: Simplify right side
    28,171.40x = 565,258,612.77
  5. Step 5: Solve for x
    x = 565,258,612.77/28,171.40
  6. Step 6: Final answer
    x = 20,064.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.