Home / 13,171.48-19,772.66-10,400.02

Finding the Fourth Proportional to 13,171.48, 19,772.66 and 10,400.02

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Solution

The fourth proportional to 13,171.48, 19,772.66 and 10,400.02 is: 15,612.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.48 : 19,772.66 = 10,400.02 : x
  2. Step 2: Convert to fraction form
    13,171.48/19,772.66 = 10,400.02/x
  3. Step 3: Cross multiply
    13,171.48x = 19,772.66 × 10,400.02
  4. Step 4: Simplify right side
    13,171.48x = 205,636,059.45
  5. Step 5: Solve for x
    x = 205,636,059.45/13,171.48
  6. Step 6: Final answer
    x = 15,612.22

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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.