Home / 15,834.47-21,851.72-8,761.05

Finding the Fourth Proportional to 15,834.47, 21,851.72 and 8,761.05

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Solution

The fourth proportional to 15,834.47, 21,851.72 and 8,761.05 is: 12,090.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,834.47 : 21,851.72 = 8,761.05 : x
  2. Step 2: Convert to fraction form
    15,834.47/21,851.72 = 8,761.05/x
  3. Step 3: Cross multiply
    15,834.47x = 21,851.72 × 8,761.05
  4. Step 4: Simplify right side
    15,834.47x = 191,443,967.70
  5. Step 5: Solve for x
    x = 191,443,967.70/15,834.47
  6. Step 6: Final answer
    x = 12,090.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.