Home / 28,685.10-43,006.68-19,301.79

Finding the Fourth Proportional to 28,685.10, 43,006.68 and 19,301.79

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Solution

The fourth proportional to 28,685.10, 43,006.68 and 19,301.79 is: 28,938.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.10 : 43,006.68 = 19,301.79 : x
  2. Step 2: Convert to fraction form
    28,685.10/43,006.68 = 19,301.79/x
  3. Step 3: Cross multiply
    28,685.10x = 43,006.68 × 19,301.79
  4. Step 4: Simplify right side
    28,685.10x = 830,105,905.96
  5. Step 5: Solve for x
    x = 830,105,905.96/28,685.10
  6. Step 6: Final answer
    x = 28,938.57

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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.