Home / 21,557.08-32,303.18-12,187

Finding the Fourth Proportional to 21,557.08, 32,303.18 and 12,187

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Solution

The fourth proportional to 21,557.08, 32,303.18 and 12,187 is: 18,262.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.08 : 32,303.18 = 12,187 : x
  2. Step 2: Convert to fraction form
    21,557.08/32,303.18 = 12,187/x
  3. Step 3: Cross multiply
    21,557.08x = 32,303.18 × 12,187
  4. Step 4: Simplify right side
    21,557.08x = 393,678,854.66
  5. Step 5: Solve for x
    x = 393,678,854.66/21,557.08
  6. Step 6: Final answer
    x = 18,262.16

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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.