Home / 28,231.26-38,960.89-15,656.02

Finding the Fourth Proportional to 28,231.26, 38,960.89 and 15,656.02

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Solution

The fourth proportional to 28,231.26, 38,960.89 and 15,656.02 is: 21,606.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.26 : 38,960.89 = 15,656.02 : x
  2. Step 2: Convert to fraction form
    28,231.26/38,960.89 = 15,656.02/x
  3. Step 3: Cross multiply
    28,231.26x = 38,960.89 × 15,656.02
  4. Step 4: Simplify right side
    28,231.26x = 609,972,473.06
  5. Step 5: Solve for x
    x = 609,972,473.06/28,231.26
  6. Step 6: Final answer
    x = 21,606.28

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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.