Home / 15,442.66-21,314.02-8,728.57

Finding the Fourth Proportional to 15,442.66, 21,314.02 and 8,728.57

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Solution

The fourth proportional to 15,442.66, 21,314.02 and 8,728.57 is: 12,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.66 : 21,314.02 = 8,728.57 : x
  2. Step 2: Convert to fraction form
    15,442.66/21,314.02 = 8,728.57/x
  3. Step 3: Cross multiply
    15,442.66x = 21,314.02 × 8,728.57
  4. Step 4: Simplify right side
    15,442.66x = 186,040,808.98
  5. Step 5: Solve for x
    x = 186,040,808.98/15,442.66
  6. Step 6: Final answer
    x = 12,047.20

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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.