Home / 19,821.72-27,354.80-10,869.57

Finding the Fourth Proportional to 19,821.72, 27,354.80 and 10,869.57

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Solution

The fourth proportional to 19,821.72, 27,354.80 and 10,869.57 is: 15,000.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.72 : 27,354.80 = 10,869.57 : x
  2. Step 2: Convert to fraction form
    19,821.72/27,354.80 = 10,869.57/x
  3. Step 3: Cross multiply
    19,821.72x = 27,354.80 × 10,869.57
  4. Step 4: Simplify right side
    19,821.72x = 297,334,913.44
  5. Step 5: Solve for x
    x = 297,334,913.44/19,821.72
  6. Step 6: Final answer
    x = 15,000.46

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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.