Home / 15,930.88-21,985.77-9,557.75

Finding the Fourth Proportional to 15,930.88, 21,985.77 and 9,557.75

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Solution

The fourth proportional to 15,930.88, 21,985.77 and 9,557.75 is: 13,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.88 : 21,985.77 = 9,557.75 : x
  2. Step 2: Convert to fraction form
    15,930.88/21,985.77 = 9,557.75/x
  3. Step 3: Cross multiply
    15,930.88x = 21,985.77 × 9,557.75
  4. Step 4: Simplify right side
    15,930.88x = 210,134,493.22
  5. Step 5: Solve for x
    x = 210,134,493.22/15,930.88
  6. Step 6: Final answer
    x = 13,190.39

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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.