Home / 21,266.16-31,901.49-8,787.12

Finding the Fourth Proportional to 21,266.16, 31,901.49 and 8,787.12

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Solution

The fourth proportional to 21,266.16, 31,901.49 and 8,787.12 is: 13,181.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.16 : 31,901.49 = 8,787.12 : x
  2. Step 2: Convert to fraction form
    21,266.16/31,901.49 = 8,787.12/x
  3. Step 3: Cross multiply
    21,266.16x = 31,901.49 × 8,787.12
  4. Step 4: Simplify right side
    21,266.16x = 280,322,220.81
  5. Step 5: Solve for x
    x = 280,322,220.81/21,266.16
  6. Step 6: Final answer
    x = 13,181.61

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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.