Home / 15,672.24-21,615.46-9,707.22

Finding the Fourth Proportional to 15,672.24, 21,615.46 and 9,707.22

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Solution

The fourth proportional to 15,672.24, 21,615.46 and 9,707.22 is: 13,388.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672.24 : 21,615.46 = 9,707.22 : x
  2. Step 2: Convert to fraction form
    15,672.24/21,615.46 = 9,707.22/x
  3. Step 3: Cross multiply
    15,672.24x = 21,615.46 × 9,707.22
  4. Step 4: Simplify right side
    15,672.24x = 209,826,025.62
  5. Step 5: Solve for x
    x = 209,826,025.62/15,672.24
  6. Step 6: Final answer
    x = 13,388.39

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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.