Home / 19,001.97-28,509.10-9,139.96

Finding the Fourth Proportional to 19,001.97, 28,509.10 and 9,139.96

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Solution

The fourth proportional to 19,001.97, 28,509.10 and 9,139.96 is: 13,712.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,001.97 : 28,509.10 = 9,139.96 : x
  2. Step 2: Convert to fraction form
    19,001.97/28,509.10 = 9,139.96/x
  3. Step 3: Cross multiply
    19,001.97x = 28,509.10 × 9,139.96
  4. Step 4: Simplify right side
    19,001.97x = 260,571,845.39
  5. Step 5: Solve for x
    x = 260,571,845.39/19,001.97
  6. Step 6: Final answer
    x = 13,712.89

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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.