Home / 21,457.16-32,190.38-8,806.95

Finding the Fourth Proportional to 21,457.16, 32,190.38 and 8,806.95

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Solution

The fourth proportional to 21,457.16, 32,190.38 and 8,806.95 is: 13,212.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.16 : 32,190.38 = 8,806.95 : x
  2. Step 2: Convert to fraction form
    21,457.16/32,190.38 = 8,806.95/x
  3. Step 3: Cross multiply
    21,457.16x = 32,190.38 × 8,806.95
  4. Step 4: Simplify right side
    21,457.16x = 283,499,089.16
  5. Step 5: Solve for x
    x = 283,499,089.16/21,457.16
  6. Step 6: Final answer
    x = 13,212.33

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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.