Home / 20,810.61-31,220.24-6,959.25

Finding the Fourth Proportional to 20,810.61, 31,220.24 and 6,959.25

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Solution

The fourth proportional to 20,810.61, 31,220.24 and 6,959.25 is: 10,440.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.61 : 31,220.24 = 6,959.25 : x
  2. Step 2: Convert to fraction form
    20,810.61/31,220.24 = 6,959.25/x
  3. Step 3: Cross multiply
    20,810.61x = 31,220.24 × 6,959.25
  4. Step 4: Simplify right side
    20,810.61x = 217,269,420.42
  5. Step 5: Solve for x
    x = 217,269,420.42/20,810.61
  6. Step 6: Final answer
    x = 10,440.32

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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.