Home / 27,345.61-37,718.08-20,988.73

Finding the Fourth Proportional to 27,345.61, 37,718.08 and 20,988.73

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Solution

The fourth proportional to 27,345.61, 37,718.08 and 20,988.73 is: 28,949.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,345.61 : 37,718.08 = 20,988.73 : x
  2. Step 2: Convert to fraction form
    27,345.61/37,718.08 = 20,988.73/x
  3. Step 3: Cross multiply
    27,345.61x = 37,718.08 × 20,988.73
  4. Step 4: Simplify right side
    27,345.61x = 791,654,597.24
  5. Step 5: Solve for x
    x = 791,654,597.24/27,345.61
  6. Step 6: Final answer
    x = 28,949.97

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Double scale
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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.