Home / 20,111.52-30,170.02-11,681.98

Finding the Fourth Proportional to 20,111.52, 30,170.02 and 11,681.98

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Solution

The fourth proportional to 20,111.52, 30,170.02 and 11,681.98 is: 17,524.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.52 : 30,170.02 = 11,681.98 : x
  2. Step 2: Convert to fraction form
    20,111.52/30,170.02 = 11,681.98/x
  3. Step 3: Cross multiply
    20,111.52x = 30,170.02 × 11,681.98
  4. Step 4: Simplify right side
    20,111.52x = 352,445,570.24
  5. Step 5: Solve for x
    x = 352,445,570.24/20,111.52
  6. Step 6: Final answer
    x = 17,524.56

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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.