Home / 15,851.99-21,875.48-8,778.26

Finding the Fourth Proportional to 15,851.99, 21,875.48 and 8,778.26

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Solution

The fourth proportional to 15,851.99, 21,875.48 and 8,778.26 is: 12,113.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,851.99 : 21,875.48 = 8,778.26 : x
  2. Step 2: Convert to fraction form
    15,851.99/21,875.48 = 8,778.26/x
  3. Step 3: Cross multiply
    15,851.99x = 21,875.48 × 8,778.26
  4. Step 4: Simplify right side
    15,851.99x = 192,028,651.06
  5. Step 5: Solve for x
    x = 192,028,651.06/15,851.99
  6. Step 6: Final answer
    x = 12,113.85

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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.