Home / 20,968.10-31,464.30-10,580.66

Finding the Fourth Proportional to 20,968.10, 31,464.30 and 10,580.66

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Solution

The fourth proportional to 20,968.10, 31,464.30 and 10,580.66 is: 15,877.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.10 : 31,464.30 = 10,580.66 : x
  2. Step 2: Convert to fraction form
    20,968.10/31,464.30 = 10,580.66/x
  3. Step 3: Cross multiply
    20,968.10x = 31,464.30 × 10,580.66
  4. Step 4: Simplify right side
    20,968.10x = 332,913,060.44
  5. Step 5: Solve for x
    x = 332,913,060.44/20,968.10
  6. Step 6: Final answer
    x = 15,877.12

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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.