Home / 15,872.90-21,897.24-11,159.96

Finding the Fourth Proportional to 15,872.90, 21,897.24 and 11,159.96

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Solution

The fourth proportional to 15,872.90, 21,897.24 and 11,159.96 is: 15,395.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,872.90 : 21,897.24 = 11,159.96 : x
  2. Step 2: Convert to fraction form
    15,872.90/21,897.24 = 11,159.96/x
  3. Step 3: Cross multiply
    15,872.90x = 21,897.24 × 11,159.96
  4. Step 4: Simplify right side
    15,872.90x = 244,372,322.51
  5. Step 5: Solve for x
    x = 244,372,322.51/15,872.90
  6. Step 6: Final answer
    x = 15,395.57

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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.