Home / 27,718.06-38,246.51-15,781.62

Finding the Fourth Proportional to 27,718.06, 38,246.51 and 15,781.62

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Solution

The fourth proportional to 27,718.06, 38,246.51 and 15,781.62 is: 21,776.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,718.06 : 38,246.51 = 15,781.62 : x
  2. Step 2: Convert to fraction form
    27,718.06/38,246.51 = 15,781.62/x
  3. Step 3: Cross multiply
    27,718.06x = 38,246.51 × 15,781.62
  4. Step 4: Simplify right side
    27,718.06x = 603,591,887.15
  5. Step 5: Solve for x
    x = 603,591,887.15/27,718.06
  6. Step 6: Final answer
    x = 21,776.12

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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.