Home / 15,447.10-21,317.16-8,732.80

Finding the Fourth Proportional to 15,447.10, 21,317.16 and 8,732.80

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Solution

The fourth proportional to 15,447.10, 21,317.16 and 8,732.80 is: 12,051.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.10 : 21,317.16 = 8,732.80 : x
  2. Step 2: Convert to fraction form
    15,447.10/21,317.16 = 8,732.80/x
  3. Step 3: Cross multiply
    15,447.10x = 21,317.16 × 8,732.80
  4. Step 4: Simplify right side
    15,447.10x = 186,158,494.85
  5. Step 5: Solve for x
    x = 186,158,494.85/15,447.10
  6. Step 6: Final answer
    x = 12,051.36

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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.