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Finding the Fourth Proportional to 27,279, 40,928.10 and 13,437.72

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Solution

The fourth proportional to 27,279, 40,928.10 and 13,437.72 is: 20,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,279 : 40,928.10 = 13,437.72 : x
  2. Step 2: Convert to fraction form
    27,279/40,928.10 = 13,437.72/x
  3. Step 3: Cross multiply
    27,279x = 40,928.10 × 13,437.72
  4. Step 4: Simplify right side
    27,279x = 549,980,347.93
  5. Step 5: Solve for x
    x = 549,980,347.93/27,279
  6. Step 6: Final answer
    x = 20,161.31

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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.