Home / 27,901.81-38,504.78-15,155.12

Finding the Fourth Proportional to 27,901.81, 38,504.78 and 15,155.12

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Solution

The fourth proportional to 27,901.81, 38,504.78 and 15,155.12 is: 20,914.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,901.81 : 38,504.78 = 15,155.12 : x
  2. Step 2: Convert to fraction form
    27,901.81/38,504.78 = 15,155.12/x
  3. Step 3: Cross multiply
    27,901.81x = 38,504.78 × 15,155.12
  4. Step 4: Simplify right side
    27,901.81x = 583,544,368.95
  5. Step 5: Solve for x
    x = 583,544,368.95/27,901.81
  6. Step 6: Final answer
    x = 20,914.21

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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.