Home / 15,320.95-21,151.02-11,910.44

Finding the Fourth Proportional to 15,320.95, 21,151.02 and 11,910.44

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Solution

The fourth proportional to 15,320.95, 21,151.02 and 11,910.44 is: 16,442.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.95 : 21,151.02 = 11,910.44 : x
  2. Step 2: Convert to fraction form
    15,320.95/21,151.02 = 11,910.44/x
  3. Step 3: Cross multiply
    15,320.95x = 21,151.02 × 11,910.44
  4. Step 4: Simplify right side
    15,320.95x = 251,918,052.19
  5. Step 5: Solve for x
    x = 251,918,052.19/15,320.95
  6. Step 6: Final answer
    x = 16,442.72

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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.