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Finding the Fourth Proportional to 27,140.88, 40,711.88 and 17,840.20

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Solution

The fourth proportional to 27,140.88, 40,711.88 and 17,840.20 is: 26,760.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,140.88 : 40,711.88 = 17,840.20 : x
  2. Step 2: Convert to fraction form
    27,140.88/40,711.88 = 17,840.20/x
  3. Step 3: Cross multiply
    27,140.88x = 40,711.88 × 17,840.20
  4. Step 4: Simplify right side
    27,140.88x = 726,308,081.58
  5. Step 5: Solve for x
    x = 726,308,081.58/27,140.88
  6. Step 6: Final answer
    x = 26,760.67

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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.