Home / 15,851.64-21,874.99-8,777.91

Finding the Fourth Proportional to 15,851.64, 21,874.99 and 8,777.91

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Solution

The fourth proportional to 15,851.64, 21,874.99 and 8,777.91 is: 12,113.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,851.64 : 21,874.99 = 8,777.91 : x
  2. Step 2: Convert to fraction form
    15,851.64/21,874.99 = 8,777.91/x
  3. Step 3: Cross multiply
    15,851.64x = 21,874.99 × 8,777.91
  4. Step 4: Simplify right side
    15,851.64x = 192,016,649.58
  5. Step 5: Solve for x
    x = 192,016,649.58/15,851.64
  6. Step 6: Final answer
    x = 12,113.36

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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.