Home / 27,917.81-38,528.94-15,345.17

Finding the Fourth Proportional to 27,917.81, 38,528.94 and 15,345.17

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Solution

The fourth proportional to 27,917.81, 38,528.94 and 15,345.17 is: 21,177.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,917.81 : 38,528.94 = 15,345.17 : x
  2. Step 2: Convert to fraction form
    27,917.81/38,528.94 = 15,345.17/x
  3. Step 3: Cross multiply
    27,917.81x = 38,528.94 × 15,345.17
  4. Step 4: Simplify right side
    27,917.81x = 591,232,941.58
  5. Step 5: Solve for x
    x = 591,232,941.58/27,917.81
  6. Step 6: Final answer
    x = 21,177.63

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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.