Home / 21,291.17-31,940.61-8,804.42

Finding the Fourth Proportional to 21,291.17, 31,940.61 and 8,804.42

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Solution

The fourth proportional to 21,291.17, 31,940.61 and 8,804.42 is: 13,208.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.17 : 31,940.61 = 8,804.42 : x
  2. Step 2: Convert to fraction form
    21,291.17/31,940.61 = 8,804.42/x
  3. Step 3: Cross multiply
    21,291.17x = 31,940.61 × 8,804.42
  4. Step 4: Simplify right side
    21,291.17x = 281,218,341.77
  5. Step 5: Solve for x
    x = 281,218,341.77/21,291.17
  6. Step 6: Final answer
    x = 13,208.21

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1.5x scale

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.