Home / 15,617.44-21,559.11-9,959.80

Finding the Fourth Proportional to 15,617.44, 21,559.11 and 9,959.80

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Solution

The fourth proportional to 15,617.44, 21,559.11 and 9,959.80 is: 13,749.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.44 : 21,559.11 = 9,959.80 : x
  2. Step 2: Convert to fraction form
    15,617.44/21,559.11 = 9,959.80/x
  3. Step 3: Cross multiply
    15,617.44x = 21,559.11 × 9,959.80
  4. Step 4: Simplify right side
    15,617.44x = 214,724,423.78
  5. Step 5: Solve for x
    x = 214,724,423.78/15,617.44
  6. Step 6: Final answer
    x = 13,749.02

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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.