Home / 19,820.43-27,355.68-15,056.15

Finding the Fourth Proportional to 19,820.43, 27,355.68 and 15,056.15

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Solution

The fourth proportional to 19,820.43, 27,355.68 and 15,056.15 is: 20,780.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.43 : 27,355.68 = 15,056.15 : x
  2. Step 2: Convert to fraction form
    19,820.43/27,355.68 = 15,056.15/x
  3. Step 3: Cross multiply
    19,820.43x = 27,355.68 × 15,056.15
  4. Step 4: Simplify right side
    19,820.43x = 411,871,084.65
  5. Step 5: Solve for x
    x = 411,871,084.65/19,820.43
  6. Step 6: Final answer
    x = 20,780.13

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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.