Home / 30,547.20-45,806.42-11,836

Finding the Fourth Proportional to 30,547.20, 45,806.42 and 11,836

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Solution

The fourth proportional to 30,547.20, 45,806.42 and 11,836 is: 17,748.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,547.20 : 45,806.42 = 11,836 : x
  2. Step 2: Convert to fraction form
    30,547.20/45,806.42 = 11,836/x
  3. Step 3: Cross multiply
    30,547.20x = 45,806.42 × 11,836
  4. Step 4: Simplify right side
    30,547.20x = 542,164,787.12
  5. Step 5: Solve for x
    x = 542,164,787.12/30,547.20
  6. Step 6: Final answer
    x = 17,748.43

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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.