Home / 34,287.40-51,406.80-13,219.30

Finding the Fourth Proportional to 34,287.40, 51,406.80 and 13,219.30

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Solution

The fourth proportional to 34,287.40, 51,406.80 and 13,219.30 is: 19,819.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,287.40 : 51,406.80 = 13,219.30 : x
  2. Step 2: Convert to fraction form
    34,287.40/51,406.80 = 13,219.30/x
  3. Step 3: Cross multiply
    34,287.40x = 51,406.80 × 13,219.30
  4. Step 4: Simplify right side
    34,287.40x = 679,561,911.24
  5. Step 5: Solve for x
    x = 679,561,911.24/34,287.40
  6. Step 6: Final answer
    x = 19,819.58

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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.