Home / 20,291.02-28,037.37-15,615.70

Finding the Fourth Proportional to 20,291.02, 28,037.37 and 15,615.70

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Solution

The fourth proportional to 20,291.02, 28,037.37 and 15,615.70 is: 21,577.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.02 : 28,037.37 = 15,615.70 : x
  2. Step 2: Convert to fraction form
    20,291.02/28,037.37 = 15,615.70/x
  3. Step 3: Cross multiply
    20,291.02x = 28,037.37 × 15,615.70
  4. Step 4: Simplify right side
    20,291.02x = 437,823,147.17
  5. Step 5: Solve for x
    x = 437,823,147.17/20,291.02
  6. Step 6: Final answer
    x = 21,577.19

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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.