Home / 20,967.98-28,935.56-15,614.37

Finding the Fourth Proportional to 20,967.98, 28,935.56 and 15,614.37

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Solution

The fourth proportional to 20,967.98, 28,935.56 and 15,614.37 is: 21,547.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.98 : 28,935.56 = 15,614.37 : x
  2. Step 2: Convert to fraction form
    20,967.98/28,935.56 = 15,614.37/x
  3. Step 3: Cross multiply
    20,967.98x = 28,935.56 × 15,614.37
  4. Step 4: Simplify right side
    20,967.98x = 451,810,579.03
  5. Step 5: Solve for x
    x = 451,810,579.03/20,967.98
  6. Step 6: Final answer
    x = 21,547.65

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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.