Home / 19,869.20-29,828.10-19,723.40

Finding the Fourth Proportional to 19,869.20, 29,828.10 and 19,723.40

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Solution

The fourth proportional to 19,869.20, 29,828.10 and 19,723.40 is: 29,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.20 : 29,828.10 = 19,723.40 : x
  2. Step 2: Convert to fraction form
    19,869.20/29,828.10 = 19,723.40/x
  3. Step 3: Cross multiply
    19,869.20x = 29,828.10 × 19,723.40
  4. Step 4: Simplify right side
    19,869.20x = 588,311,547.54
  5. Step 5: Solve for x
    x = 588,311,547.54/19,869.20
  6. Step 6: Final answer
    x = 29,609.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.