Home / 19,641.65-27,105.75-10,689.17

Finding the Fourth Proportional to 19,641.65, 27,105.75 and 10,689.17

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Solution

The fourth proportional to 19,641.65, 27,105.75 and 10,689.17 is: 14,751.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,641.65 : 27,105.75 = 10,689.17 : x
  2. Step 2: Convert to fraction form
    19,641.65/27,105.75 = 10,689.17/x
  3. Step 3: Cross multiply
    19,641.65x = 27,105.75 × 10,689.17
  4. Step 4: Simplify right side
    19,641.65x = 289,737,834.20
  5. Step 5: Solve for x
    x = 289,737,834.20/19,641.65
  6. Step 6: Final answer
    x = 14,751.20

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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.