Home / 18,787.51-25,920.88-10,828.65

Finding the Fourth Proportional to 18,787.51, 25,920.88 and 10,828.65

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Solution

The fourth proportional to 18,787.51, 25,920.88 and 10,828.65 is: 14,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.51 : 25,920.88 = 10,828.65 : x
  2. Step 2: Convert to fraction form
    18,787.51/25,920.88 = 10,828.65/x
  3. Step 3: Cross multiply
    18,787.51x = 25,920.88 × 10,828.65
  4. Step 4: Simplify right side
    18,787.51x = 280,688,137.21
  5. Step 5: Solve for x
    x = 280,688,137.21/18,787.51
  6. Step 6: Final answer
    x = 14,940.15

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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.