Home / 15,333.98-21,161.12-8,619.57

Finding the Fourth Proportional to 15,333.98, 21,161.12 and 8,619.57

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Solution

The fourth proportional to 15,333.98, 21,161.12 and 8,619.57 is: 11,895.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,333.98 : 21,161.12 = 8,619.57 : x
  2. Step 2: Convert to fraction form
    15,333.98/21,161.12 = 8,619.57/x
  3. Step 3: Cross multiply
    15,333.98x = 21,161.12 × 8,619.57
  4. Step 4: Simplify right side
    15,333.98x = 182,399,712.02
  5. Step 5: Solve for x
    x = 182,399,712.02/15,333.98
  6. Step 6: Final answer
    x = 11,895.14

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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.