Home / 20,984.97-31,457.67-10,445.03

Finding the Fourth Proportional to 20,984.97, 31,457.67 and 10,445.03

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Solution

The fourth proportional to 20,984.97, 31,457.67 and 10,445.03 is: 15,657.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.97 : 31,457.67 = 10,445.03 : x
  2. Step 2: Convert to fraction form
    20,984.97/31,457.67 = 10,445.03/x
  3. Step 3: Cross multiply
    20,984.97x = 31,457.67 × 10,445.03
  4. Step 4: Simplify right side
    20,984.97x = 328,576,169.29
  5. Step 5: Solve for x
    x = 328,576,169.29/20,984.97
  6. Step 6: Final answer
    x = 15,657.69

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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.