Home / 31,212.19-43,060.57-19,878.67

Finding the Fourth Proportional to 31,212.19, 43,060.57 and 19,878.67

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Solution

The fourth proportional to 31,212.19, 43,060.57 and 19,878.67 is: 27,424.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,212.19 : 43,060.57 = 19,878.67 : x
  2. Step 2: Convert to fraction form
    31,212.19/43,060.57 = 19,878.67/x
  3. Step 3: Cross multiply
    31,212.19x = 43,060.57 × 19,878.67
  4. Step 4: Simplify right side
    31,212.19x = 855,986,861.04
  5. Step 5: Solve for x
    x = 855,986,861.04/31,212.19
  6. Step 6: Final answer
    x = 27,424.76

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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.