Home / 21,427.11-32,148.36-9,579.87

Finding the Fourth Proportional to 21,427.11, 32,148.36 and 9,579.87

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Solution

The fourth proportional to 21,427.11, 32,148.36 and 9,579.87 is: 14,373.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.11 : 32,148.36 = 9,579.87 : x
  2. Step 2: Convert to fraction form
    21,427.11/32,148.36 = 9,579.87/x
  3. Step 3: Cross multiply
    21,427.11x = 32,148.36 × 9,579.87
  4. Step 4: Simplify right side
    21,427.11x = 307,977,109.51
  5. Step 5: Solve for x
    x = 307,977,109.51/21,427.11
  6. Step 6: Final answer
    x = 14,373.25

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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.