Home / 15,515.97-21,411.93-8,442.42

Finding the Fourth Proportional to 15,515.97, 21,411.93 and 8,442.42

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Solution

The fourth proportional to 15,515.97, 21,411.93 and 8,442.42 is: 11,650.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.97 : 21,411.93 = 8,442.42 : x
  2. Step 2: Convert to fraction form
    15,515.97/21,411.93 = 8,442.42/x
  3. Step 3: Cross multiply
    15,515.97x = 21,411.93 × 8,442.42
  4. Step 4: Simplify right side
    15,515.97x = 180,768,506.07
  5. Step 5: Solve for x
    x = 180,768,506.07/15,515.97
  6. Step 6: Final answer
    x = 11,650.48

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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.