Home / 15,746.75-21,731.49-8,673.17

Finding the Fourth Proportional to 15,746.75, 21,731.49 and 8,673.17

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Solution

The fourth proportional to 15,746.75, 21,731.49 and 8,673.17 is: 11,969.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.75 : 21,731.49 = 8,673.17 : x
  2. Step 2: Convert to fraction form
    15,746.75/21,731.49 = 8,673.17/x
  3. Step 3: Cross multiply
    15,746.75x = 21,731.49 × 8,673.17
  4. Step 4: Simplify right side
    15,746.75x = 188,480,798.47
  5. Step 5: Solve for x
    x = 188,480,798.47/15,746.75
  6. Step 6: Final answer
    x = 11,969.51

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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.