Home / 27,938.42-38,555.09-15,191.60

Finding the Fourth Proportional to 27,938.42, 38,555.09 and 15,191.60

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Solution

The fourth proportional to 27,938.42, 38,555.09 and 15,191.60 is: 20,964.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,938.42 : 38,555.09 = 15,191.60 : x
  2. Step 2: Convert to fraction form
    27,938.42/38,555.09 = 15,191.60/x
  3. Step 3: Cross multiply
    27,938.42x = 38,555.09 × 15,191.60
  4. Step 4: Simplify right side
    27,938.42x = 585,713,639.61
  5. Step 5: Solve for x
    x = 585,713,639.61/27,938.42
  6. Step 6: Final answer
    x = 20,964.45

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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.