Home / 13,819.13-19,070.40-7,531.50

Finding the Fourth Proportional to 13,819.13, 19,070.40 and 7,531.50

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Solution

The fourth proportional to 13,819.13, 19,070.40 and 7,531.50 is: 10,393.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.13 : 19,070.40 = 7,531.50 : x
  2. Step 2: Convert to fraction form
    13,819.13/19,070.40 = 7,531.50/x
  3. Step 3: Cross multiply
    13,819.13x = 19,070.40 × 7,531.50
  4. Step 4: Simplify right side
    13,819.13x = 143,628,717.60
  5. Step 5: Solve for x
    x = 143,628,717.60/13,819.13
  6. Step 6: Final answer
    x = 10,393.47

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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.