Home / 20,598.31-28,424.56-11,645.28

Finding the Fourth Proportional to 20,598.31, 28,424.56 and 11,645.28

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Solution

The fourth proportional to 20,598.31, 28,424.56 and 11,645.28 is: 16,069.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,598.31 : 28,424.56 = 11,645.28 : x
  2. Step 2: Convert to fraction form
    20,598.31/28,424.56 = 11,645.28/x
  3. Step 3: Cross multiply
    20,598.31x = 28,424.56 × 11,645.28
  4. Step 4: Simplify right side
    20,598.31x = 331,011,960.08
  5. Step 5: Solve for x
    x = 331,011,960.08/20,598.31
  6. Step 6: Final answer
    x = 16,069.86

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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.