Home / 31,211.19-43,059.20-19,877.67

Finding the Fourth Proportional to 31,211.19, 43,059.20 and 19,877.67

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Solution

The fourth proportional to 31,211.19, 43,059.20 and 19,877.67 is: 27,423.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,211.19 : 43,059.20 = 19,877.67 : x
  2. Step 2: Convert to fraction form
    31,211.19/43,059.20 = 19,877.67/x
  3. Step 3: Cross multiply
    31,211.19x = 43,059.20 × 19,877.67
  4. Step 4: Simplify right side
    31,211.19x = 855,916,468.68
  5. Step 5: Solve for x
    x = 855,916,468.68/31,211.19
  6. Step 6: Final answer
    x = 27,423.38

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Half scale
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Double scale
Find fourth proportional to 31,212.19, 43,060.57 and 19,878.67
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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.