Home / 15,887.17-21,919.84-12,519.53

Finding the Fourth Proportional to 15,887.17, 21,919.84 and 12,519.53

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Solution

The fourth proportional to 15,887.17, 21,919.84 and 12,519.53 is: 17,273.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.17 : 21,919.84 = 12,519.53 : x
  2. Step 2: Convert to fraction form
    15,887.17/21,919.84 = 12,519.53/x
  3. Step 3: Cross multiply
    15,887.17x = 21,919.84 × 12,519.53
  4. Step 4: Simplify right side
    15,887.17x = 274,426,094.48
  5. Step 5: Solve for x
    x = 274,426,094.48/15,887.17
  6. Step 6: Final answer
    x = 17,273.44

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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.