Home / 20,875.14-31,312.62-5,292.72

Finding the Fourth Proportional to 20,875.14, 31,312.62 and 5,292.72

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Solution

The fourth proportional to 20,875.14, 31,312.62 and 5,292.72 is: 7,939.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.14 : 31,312.62 = 5,292.72 : x
  2. Step 2: Convert to fraction form
    20,875.14/31,312.62 = 5,292.72/x
  3. Step 3: Cross multiply
    20,875.14x = 31,312.62 × 5,292.72
  4. Step 4: Simplify right side
    20,875.14x = 165,728,930.13
  5. Step 5: Solve for x
    x = 165,728,930.13/20,875.14
  6. Step 6: Final answer
    x = 7,939.06

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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.