Home / 20,756.13-28,635.98-15,977.54

Finding the Fourth Proportional to 20,756.13, 28,635.98 and 15,977.54

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Solution

The fourth proportional to 20,756.13, 28,635.98 and 15,977.54 is: 22,043.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.13 : 28,635.98 = 15,977.54 : x
  2. Step 2: Convert to fraction form
    20,756.13/28,635.98 = 15,977.54/x
  3. Step 3: Cross multiply
    20,756.13x = 28,635.98 × 15,977.54
  4. Step 4: Simplify right side
    20,756.13x = 457,532,292.82
  5. Step 5: Solve for x
    x = 457,532,292.82/20,756.13
  6. Step 6: Final answer
    x = 22,043.24

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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.