Home / 20,265.20-30,386.40-13,947.51

Finding the Fourth Proportional to 20,265.20, 30,386.40 and 13,947.51

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Solution

The fourth proportional to 20,265.20, 30,386.40 and 13,947.51 is: 20,913.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.20 : 30,386.40 = 13,947.51 : x
  2. Step 2: Convert to fraction form
    20,265.20/30,386.40 = 13,947.51/x
  3. Step 3: Cross multiply
    20,265.20x = 30,386.40 × 13,947.51
  4. Step 4: Simplify right side
    20,265.20x = 423,814,451.61
  5. Step 5: Solve for x
    x = 423,814,451.61/20,265.20
  6. Step 6: Final answer
    x = 20,913.41

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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.