Home / 15,945.50-22,004.80-9,321.50

Finding the Fourth Proportional to 15,945.50, 22,004.80 and 9,321.50

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Solution

The fourth proportional to 15,945.50, 22,004.80 and 9,321.50 is: 12,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,945.50 : 22,004.80 = 9,321.50 : x
  2. Step 2: Convert to fraction form
    15,945.50/22,004.80 = 9,321.50/x
  3. Step 3: Cross multiply
    15,945.50x = 22,004.80 × 9,321.50
  4. Step 4: Simplify right side
    15,945.50x = 205,117,743.20
  5. Step 5: Solve for x
    x = 205,117,743.20/15,945.50
  6. Step 6: Final answer
    x = 12,863.68

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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.