Home / 20,937.23-31,411.95-8,450.87

Finding the Fourth Proportional to 20,937.23, 31,411.95 and 8,450.87

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Solution

The fourth proportional to 20,937.23, 31,411.95 and 8,450.87 is: 12,678.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.23 : 31,411.95 = 8,450.87 : x
  2. Step 2: Convert to fraction form
    20,937.23/31,411.95 = 8,450.87/x
  3. Step 3: Cross multiply
    20,937.23x = 31,411.95 × 8,450.87
  4. Step 4: Simplify right side
    20,937.23x = 265,458,263.64
  5. Step 5: Solve for x
    x = 265,458,263.64/20,937.23
  6. Step 6: Final answer
    x = 12,678.77

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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.