Home / 15,887.04-21,950.56-12,555.44

Finding the Fourth Proportional to 15,887.04, 21,950.56 and 12,555.44

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Solution

The fourth proportional to 15,887.04, 21,950.56 and 12,555.44 is: 17,347.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.04 : 21,950.56 = 12,555.44 : x
  2. Step 2: Convert to fraction form
    15,887.04/21,950.56 = 12,555.44/x
  3. Step 3: Cross multiply
    15,887.04x = 21,950.56 × 12,555.44
  4. Step 4: Simplify right side
    15,887.04x = 275,598,939.05
  5. Step 5: Solve for x
    x = 275,598,939.05/15,887.04
  6. Step 6: Final answer
    x = 17,347.41

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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.