Home / 15,747.66-21,730.32-8,672.40

Finding the Fourth Proportional to 15,747.66, 21,730.32 and 8,672.40

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Solution

The fourth proportional to 15,747.66, 21,730.32 and 8,672.40 is: 11,967.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.66 : 21,730.32 = 8,672.40 : x
  2. Step 2: Convert to fraction form
    15,747.66/21,730.32 = 8,672.40/x
  3. Step 3: Cross multiply
    15,747.66x = 21,730.32 × 8,672.40
  4. Step 4: Simplify right side
    15,747.66x = 188,454,027.17
  5. Step 5: Solve for x
    x = 188,454,027.17/15,747.66
  6. Step 6: Final answer
    x = 11,967.11

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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.