Home / 15,515.24-21,411.30-8,802.44

Finding the Fourth Proportional to 15,515.24, 21,411.30 and 8,802.44

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Solution

The fourth proportional to 15,515.24, 21,411.30 and 8,802.44 is: 12,147.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.24 : 21,411.30 = 8,802.44 : x
  2. Step 2: Convert to fraction form
    15,515.24/21,411.30 = 8,802.44/x
  3. Step 3: Cross multiply
    15,515.24x = 21,411.30 × 8,802.44
  4. Step 4: Simplify right side
    15,515.24x = 188,471,683.57
  5. Step 5: Solve for x
    x = 188,471,683.57/15,515.24
  6. Step 6: Final answer
    x = 12,147.52

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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.