Home / 28,522.65-39,361.53-15,775.20

Finding the Fourth Proportional to 28,522.65, 39,361.53 and 15,775.20

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Solution

The fourth proportional to 28,522.65, 39,361.53 and 15,775.20 is: 21,769.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,522.65 : 39,361.53 = 15,775.20 : x
  2. Step 2: Convert to fraction form
    28,522.65/39,361.53 = 15,775.20/x
  3. Step 3: Cross multiply
    28,522.65x = 39,361.53 × 15,775.20
  4. Step 4: Simplify right side
    28,522.65x = 620,936,008.06
  5. Step 5: Solve for x
    x = 620,936,008.06/28,522.65
  6. Step 6: Final answer
    x = 21,769.93

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1.5x scale

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.