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Finding the Fourth Proportional to 18,570.79, 27,823.77 and 15,470.71

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Solution

The fourth proportional to 18,570.79, 27,823.77 and 15,470.71 is: 23,179.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.79 : 27,823.77 = 15,470.71 : x
  2. Step 2: Convert to fraction form
    18,570.79/27,823.77 = 15,470.71/x
  3. Step 3: Cross multiply
    18,570.79x = 27,823.77 × 15,470.71
  4. Step 4: Simplify right side
    18,570.79x = 430,453,476.78
  5. Step 5: Solve for x
    x = 430,453,476.78/18,570.79
  6. Step 6: Final answer
    x = 23,179.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.