Home / 28,172.96-38,876.02-16,840.18

Finding the Fourth Proportional to 28,172.96, 38,876.02 and 16,840.18

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Solution

The fourth proportional to 28,172.96, 38,876.02 and 16,840.18 is: 23,237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.96 : 38,876.02 = 16,840.18 : x
  2. Step 2: Convert to fraction form
    28,172.96/38,876.02 = 16,840.18/x
  3. Step 3: Cross multiply
    28,172.96x = 38,876.02 × 16,840.18
  4. Step 4: Simplify right side
    28,172.96x = 654,679,180.98
  5. Step 5: Solve for x
    x = 654,679,180.98/28,172.96
  6. Step 6: Final answer
    x = 23,237.86

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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.