Home / 27,279.60-37,684.08-21,071.76

Finding the Fourth Proportional to 27,279.60, 37,684.08 and 21,071.76

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Solution

The fourth proportional to 27,279.60, 37,684.08 and 21,071.76 is: 29,108.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,279.60 : 37,684.08 = 21,071.76 : x
  2. Step 2: Convert to fraction form
    27,279.60/37,684.08 = 21,071.76/x
  3. Step 3: Cross multiply
    27,279.60x = 37,684.08 × 21,071.76
  4. Step 4: Simplify right side
    27,279.60x = 794,069,889.58
  5. Step 5: Solve for x
    x = 794,069,889.58/27,279.60
  6. Step 6: Final answer
    x = 29,108.56

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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.