Home / 28,560.34-42,856.01-11,921.82

Finding the Fourth Proportional to 28,560.34, 42,856.01 and 11,921.82

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Solution

The fourth proportional to 28,560.34, 42,856.01 and 11,921.82 is: 17,889.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.34 : 42,856.01 = 11,921.82 : x
  2. Step 2: Convert to fraction form
    28,560.34/42,856.01 = 11,921.82/x
  3. Step 3: Cross multiply
    28,560.34x = 42,856.01 × 11,921.82
  4. Step 4: Simplify right side
    28,560.34x = 510,921,577.53
  5. Step 5: Solve for x
    x = 510,921,577.53/28,560.34
  6. Step 6: Final answer
    x = 17,889.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.