Home / 20,291.08-28,037.46-15,615.76

Finding the Fourth Proportional to 20,291.08, 28,037.46 and 15,615.76

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Solution

The fourth proportional to 20,291.08, 28,037.46 and 15,615.76 is: 21,577.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.08 : 28,037.46 = 15,615.76 : x
  2. Step 2: Convert to fraction form
    20,291.08/28,037.46 = 15,615.76/x
  3. Step 3: Cross multiply
    20,291.08x = 28,037.46 × 15,615.76
  4. Step 4: Simplify right side
    20,291.08x = 437,826,246.37
  5. Step 5: Solve for x
    x = 437,826,246.37/20,291.08
  6. Step 6: Final answer
    x = 21,577.28

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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.