Home / 21,164.72-31,731.36-10,484.96

Finding the Fourth Proportional to 21,164.72, 31,731.36 and 10,484.96

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Solution

The fourth proportional to 21,164.72, 31,731.36 and 10,484.96 is: 15,719.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.72 : 31,731.36 = 10,484.96 : x
  2. Step 2: Convert to fraction form
    21,164.72/31,731.36 = 10,484.96/x
  3. Step 3: Cross multiply
    21,164.72x = 31,731.36 × 10,484.96
  4. Step 4: Simplify right side
    21,164.72x = 332,702,040.35
  5. Step 5: Solve for x
    x = 332,702,040.35/21,164.72
  6. Step 6: Final answer
    x = 15,719.65

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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.