Home / 21,579.15-32,381.28-9,098.40

Finding the Fourth Proportional to 21,579.15, 32,381.28 and 9,098.40

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Solution

The fourth proportional to 21,579.15, 32,381.28 and 9,098.40 is: 13,652.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.15 : 32,381.28 = 9,098.40 : x
  2. Step 2: Convert to fraction form
    21,579.15/32,381.28 = 9,098.40/x
  3. Step 3: Cross multiply
    21,579.15x = 32,381.28 × 9,098.40
  4. Step 4: Simplify right side
    21,579.15x = 294,617,837.95
  5. Step 5: Solve for x
    x = 294,617,837.95/21,579.15
  6. Step 6: Final answer
    x = 13,652.89

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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.