Home / 21,389.13-32,089.17-8,905.01

Finding the Fourth Proportional to 21,389.13, 32,089.17 and 8,905.01

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Solution

The fourth proportional to 21,389.13, 32,089.17 and 8,905.01 is: 13,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.13 : 32,089.17 = 8,905.01 : x
  2. Step 2: Convert to fraction form
    21,389.13/32,089.17 = 8,905.01/x
  3. Step 3: Cross multiply
    21,389.13x = 32,089.17 × 8,905.01
  4. Step 4: Simplify right side
    21,389.13x = 285,754,219.30
  5. Step 5: Solve for x
    x = 285,754,219.30/21,389.13
  6. Step 6: Final answer
    x = 13,359.79

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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.