Home / 15,764.95-21,751.50-9,391.06

Finding the Fourth Proportional to 15,764.95, 21,751.50 and 9,391.06

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Solution

The fourth proportional to 15,764.95, 21,751.50 and 9,391.06 is: 12,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.95 : 21,751.50 = 9,391.06 : x
  2. Step 2: Convert to fraction form
    15,764.95/21,751.50 = 9,391.06/x
  3. Step 3: Cross multiply
    15,764.95x = 21,751.50 × 9,391.06
  4. Step 4: Simplify right side
    15,764.95x = 204,269,641.59
  5. Step 5: Solve for x
    x = 204,269,641.59/15,764.95
  6. Step 6: Final answer
    x = 12,957.20

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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.