Home / 20,301.57-28,015.70-11,348.55

Finding the Fourth Proportional to 20,301.57, 28,015.70 and 11,348.55

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Solution

The fourth proportional to 20,301.57, 28,015.70 and 11,348.55 is: 15,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.57 : 28,015.70 = 11,348.55 : x
  2. Step 2: Convert to fraction form
    20,301.57/28,015.70 = 11,348.55/x
  3. Step 3: Cross multiply
    20,301.57x = 28,015.70 × 11,348.55
  4. Step 4: Simplify right side
    20,301.57x = 317,937,515.49
  5. Step 5: Solve for x
    x = 317,937,515.49/20,301.57
  6. Step 6: Final answer
    x = 15,660.74

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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.