Home / 21,314.19-31,942.35-11,316.41

Finding the Fourth Proportional to 21,314.19, 31,942.35 and 11,316.41

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Solution

The fourth proportional to 21,314.19, 31,942.35 and 11,316.41 is: 16,959.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.19 : 31,942.35 = 11,316.41 : x
  2. Step 2: Convert to fraction form
    21,314.19/31,942.35 = 11,316.41/x
  3. Step 3: Cross multiply
    21,314.19x = 31,942.35 × 11,316.41
  4. Step 4: Simplify right side
    21,314.19x = 361,472,728.96
  5. Step 5: Solve for x
    x = 361,472,728.96/21,314.19
  6. Step 6: Final answer
    x = 16,959.25

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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.