Home / 20,497.95-28,302.77-20,171.12

Finding the Fourth Proportional to 20,497.95, 28,302.77 and 20,171.12

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Solution

The fourth proportional to 20,497.95, 28,302.77 and 20,171.12 is: 27,851.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.95 : 28,302.77 = 20,171.12 : x
  2. Step 2: Convert to fraction form
    20,497.95/28,302.77 = 20,171.12/x
  3. Step 3: Cross multiply
    20,497.95x = 28,302.77 × 20,171.12
  4. Step 4: Simplify right side
    20,497.95x = 570,898,327.63
  5. Step 5: Solve for x
    x = 570,898,327.63/20,497.95
  6. Step 6: Final answer
    x = 27,851.48

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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.