Home / 13,319.81-19,974.51-4,995.28

Finding the Fourth Proportional to 13,319.81, 19,974.51 and 4,995.28

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Solution

The fourth proportional to 13,319.81, 19,974.51 and 4,995.28 is: 7,490.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.81 : 19,974.51 = 4,995.28 : x
  2. Step 2: Convert to fraction form
    13,319.81/19,974.51 = 4,995.28/x
  3. Step 3: Cross multiply
    13,319.81x = 19,974.51 × 4,995.28
  4. Step 4: Simplify right side
    13,319.81x = 99,778,270.31
  5. Step 5: Solve for x
    x = 99,778,270.31/13,319.81
  6. Step 6: Final answer
    x = 7,490.97

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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.