Home / 21,457.10-32,133.70-10,899.36

Finding the Fourth Proportional to 21,457.10, 32,133.70 and 10,899.36

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Solution

The fourth proportional to 21,457.10, 32,133.70 and 10,899.36 is: 16,322.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.10 : 32,133.70 = 10,899.36 : x
  2. Step 2: Convert to fraction form
    21,457.10/32,133.70 = 10,899.36/x
  3. Step 3: Cross multiply
    21,457.10x = 32,133.70 × 10,899.36
  4. Step 4: Simplify right side
    21,457.10x = 350,236,764.43
  5. Step 5: Solve for x
    x = 350,236,764.43/21,457.10
  6. Step 6: Final answer
    x = 16,322.65

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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.