Home / 21,861.10-32,530.01-21,787.36

Finding the Fourth Proportional to 21,861.10, 32,530.01 and 21,787.36

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Solution

The fourth proportional to 21,861.10, 32,530.01 and 21,787.36 is: 32,420.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,861.10 : 32,530.01 = 21,787.36 : x
  2. Step 2: Convert to fraction form
    21,861.10/32,530.01 = 21,787.36/x
  3. Step 3: Cross multiply
    21,861.10x = 32,530.01 × 21,787.36
  4. Step 4: Simplify right side
    21,861.10x = 708,743,038.67
  5. Step 5: Solve for x
    x = 708,743,038.67/21,861.10
  6. Step 6: Final answer
    x = 32,420.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.