Home / 19,821.89-27,354.57-10,868.85

Finding the Fourth Proportional to 19,821.89, 27,354.57 and 10,868.85

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Solution

The fourth proportional to 19,821.89, 27,354.57 and 10,868.85 is: 14,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.89 : 27,354.57 = 10,868.85 : x
  2. Step 2: Convert to fraction form
    19,821.89/27,354.57 = 10,868.85/x
  3. Step 3: Cross multiply
    19,821.89x = 27,354.57 × 10,868.85
  4. Step 4: Simplify right side
    19,821.89x = 297,312,718.14
  5. Step 5: Solve for x
    x = 297,312,718.14/19,821.89
  6. Step 6: Final answer
    x = 14,999.22

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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.