Home / 21,787.65-30,065.72-12,226.63

Finding the Fourth Proportional to 21,787.65, 30,065.72 and 12,226.63

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Solution

The fourth proportional to 21,787.65, 30,065.72 and 12,226.63 is: 16,872.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.65 : 30,065.72 = 12,226.63 : x
  2. Step 2: Convert to fraction form
    21,787.65/30,065.72 = 12,226.63/x
  3. Step 3: Cross multiply
    21,787.65x = 30,065.72 × 12,226.63
  4. Step 4: Simplify right side
    21,787.65x = 367,602,434.12
  5. Step 5: Solve for x
    x = 367,602,434.12/21,787.65
  6. Step 6: Final answer
    x = 16,872.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.