Home / 21,878.02-32,827.74-13,555.82

Finding the Fourth Proportional to 21,878.02, 32,827.74 and 13,555.82

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Solution

The fourth proportional to 21,878.02, 32,827.74 and 13,555.82 is: 20,340.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,878.02 : 32,827.74 = 13,555.82 : x
  2. Step 2: Convert to fraction form
    21,878.02/32,827.74 = 13,555.82/x
  3. Step 3: Cross multiply
    21,878.02x = 32,827.74 × 13,555.82
  4. Step 4: Simplify right side
    21,878.02x = 445,006,934.45
  5. Step 5: Solve for x
    x = 445,006,934.45/21,878.02
  6. Step 6: Final answer
    x = 20,340.37

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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.