Home / 15,747.09-21,730.72-8,674.17

Finding the Fourth Proportional to 15,747.09, 21,730.72 and 8,674.17

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Solution

The fourth proportional to 15,747.09, 21,730.72 and 8,674.17 is: 11,970.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.09 : 21,730.72 = 8,674.17 : x
  2. Step 2: Convert to fraction form
    15,747.09/21,730.72 = 8,674.17/x
  3. Step 3: Cross multiply
    15,747.09x = 21,730.72 × 8,674.17
  4. Step 4: Simplify right side
    15,747.09x = 188,495,959.50
  5. Step 5: Solve for x
    x = 188,495,959.50/15,747.09
  6. Step 6: Final answer
    x = 11,970.21

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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.