Home / 28,916.40-43,389.12-11,398.80

Finding the Fourth Proportional to 28,916.40, 43,389.12 and 11,398.80

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Solution

The fourth proportional to 28,916.40, 43,389.12 and 11,398.80 is: 17,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,916.40 : 43,389.12 = 11,398.80 : x
  2. Step 2: Convert to fraction form
    28,916.40/43,389.12 = 11,398.80/x
  3. Step 3: Cross multiply
    28,916.40x = 43,389.12 × 11,398.80
  4. Step 4: Simplify right side
    28,916.40x = 494,583,901.06
  5. Step 5: Solve for x
    x = 494,583,901.06/28,916.40
  6. Step 6: Final answer
    x = 17,103.92

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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.