Home / 13,819.40-19,070.70-7,531.72

Finding the Fourth Proportional to 13,819.40, 19,070.70 and 7,531.72

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Solution

The fourth proportional to 13,819.40, 19,070.70 and 7,531.72 is: 10,393.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.40 : 19,070.70 = 7,531.72 : x
  2. Step 2: Convert to fraction form
    13,819.40/19,070.70 = 7,531.72/x
  3. Step 3: Cross multiply
    13,819.40x = 19,070.70 × 7,531.72
  4. Step 4: Simplify right side
    13,819.40x = 143,635,172.60
  5. Step 5: Solve for x
    x = 143,635,172.60/13,819.40
  6. Step 6: Final answer
    x = 10,393.73

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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.