Home / 15,553.88-21,452.22-9,965.40

Finding the Fourth Proportional to 15,553.88, 21,452.22 and 9,965.40

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Solution

The fourth proportional to 15,553.88, 21,452.22 and 9,965.40 is: 13,744.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.88 : 21,452.22 = 9,965.40 : x
  2. Step 2: Convert to fraction form
    15,553.88/21,452.22 = 9,965.40/x
  3. Step 3: Cross multiply
    15,553.88x = 21,452.22 × 9,965.40
  4. Step 4: Simplify right side
    15,553.88x = 213,779,953.19
  5. Step 5: Solve for x
    x = 213,779,953.19/15,553.88
  6. Step 6: Final answer
    x = 13,744.48

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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.