Home / 20,749.93-31,134.02-10,886.89

Finding the Fourth Proportional to 20,749.93, 31,134.02 and 10,886.89

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Solution

The fourth proportional to 20,749.93, 31,134.02 and 10,886.89 is: 16,335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.93 : 31,134.02 = 10,886.89 : x
  2. Step 2: Convert to fraction form
    20,749.93/31,134.02 = 10,886.89/x
  3. Step 3: Cross multiply
    20,749.93x = 31,134.02 × 10,886.89
  4. Step 4: Simplify right side
    20,749.93x = 338,952,717.13
  5. Step 5: Solve for x
    x = 338,952,717.13/20,749.93
  6. Step 6: Final answer
    x = 16,335.12

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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.