Home / 26,885.81-37,112.51-20,190.79

Finding the Fourth Proportional to 26,885.81, 37,112.51 and 20,190.79

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Solution

The fourth proportional to 26,885.81, 37,112.51 and 20,190.79 is: 27,870.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,885.81 : 37,112.51 = 20,190.79 : x
  2. Step 2: Convert to fraction form
    26,885.81/37,112.51 = 20,190.79/x
  3. Step 3: Cross multiply
    26,885.81x = 37,112.51 × 20,190.79
  4. Step 4: Simplify right side
    26,885.81x = 749,330,895.78
  5. Step 5: Solve for x
    x = 749,330,895.78/26,885.81
  6. Step 6: Final answer
    x = 27,870.87

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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.