Home / 21,619.36-32,385.76-9,916.48

Finding the Fourth Proportional to 21,619.36, 32,385.76 and 9,916.48

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Solution

The fourth proportional to 21,619.36, 32,385.76 and 9,916.48 is: 14,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.36 : 32,385.76 = 9,916.48 : x
  2. Step 2: Convert to fraction form
    21,619.36/32,385.76 = 9,916.48/x
  3. Step 3: Cross multiply
    21,619.36x = 32,385.76 × 9,916.48
  4. Step 4: Simplify right side
    21,619.36x = 321,152,741.32
  5. Step 5: Solve for x
    x = 321,152,741.32/21,619.36
  6. Step 6: Final answer
    x = 14,854.87

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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.