Home / 34,279.40-51,394.80-13,211.30

Finding the Fourth Proportional to 34,279.40, 51,394.80 and 13,211.30

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Solution

The fourth proportional to 34,279.40, 51,394.80 and 13,211.30 is: 19,807.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,279.40 : 51,394.80 = 13,211.30 : x
  2. Step 2: Convert to fraction form
    34,279.40/51,394.80 = 13,211.30/x
  3. Step 3: Cross multiply
    34,279.40x = 51,394.80 × 13,211.30
  4. Step 4: Simplify right side
    34,279.40x = 678,992,121.24
  5. Step 5: Solve for x
    x = 678,992,121.24/34,279.40
  6. Step 6: Final answer
    x = 19,807.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.