Home / 15,887.95-21,920.83-9,512.03

Finding the Fourth Proportional to 15,887.95, 21,920.83 and 9,512.03

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Solution

The fourth proportional to 15,887.95, 21,920.83 and 9,512.03 is: 13,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.95 : 21,920.83 = 9,512.03 : x
  2. Step 2: Convert to fraction form
    15,887.95/21,920.83 = 9,512.03/x
  3. Step 3: Cross multiply
    15,887.95x = 21,920.83 × 9,512.03
  4. Step 4: Simplify right side
    15,887.95x = 208,511,623.61
  5. Step 5: Solve for x
    x = 208,511,623.61/15,887.95
  6. Step 6: Final answer
    x = 13,123.89

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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.