Home / 27,836.20-38,428.74-18,931.24

Finding the Fourth Proportional to 27,836.20, 38,428.74 and 18,931.24

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Solution

The fourth proportional to 27,836.20, 38,428.74 and 18,931.24 is: 26,135.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,836.20 : 38,428.74 = 18,931.24 : x
  2. Step 2: Convert to fraction form
    27,836.20/38,428.74 = 18,931.24/x
  3. Step 3: Cross multiply
    27,836.20x = 38,428.74 × 18,931.24
  4. Step 4: Simplify right side
    27,836.20x = 727,503,699.84
  5. Step 5: Solve for x
    x = 727,503,699.84/27,836.20
  6. Step 6: Final answer
    x = 26,135.17

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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.