Home / 21,405.25-32,087.22-10,870.39

Finding the Fourth Proportional to 21,405.25, 32,087.22 and 10,870.39

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Solution

The fourth proportional to 21,405.25, 32,087.22 and 10,870.39 is: 16,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.25 : 32,087.22 = 10,870.39 : x
  2. Step 2: Convert to fraction form
    21,405.25/32,087.22 = 10,870.39/x
  3. Step 3: Cross multiply
    21,405.25x = 32,087.22 × 10,870.39
  4. Step 4: Simplify right side
    21,405.25x = 348,800,595.42
  5. Step 5: Solve for x
    x = 348,800,595.42/21,405.25
  6. Step 6: Final answer
    x = 16,295.10

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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.