Home / 15,415.81-23,116.50-5,553.79

Finding the Fourth Proportional to 15,415.81, 23,116.50 and 5,553.79

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Solution

The fourth proportional to 15,415.81, 23,116.50 and 5,553.79 is: 8,328.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.81 : 23,116.50 = 5,553.79 : x
  2. Step 2: Convert to fraction form
    15,415.81/23,116.50 = 5,553.79/x
  3. Step 3: Cross multiply
    15,415.81x = 23,116.50 × 5,553.79
  4. Step 4: Simplify right side
    15,415.81x = 128,384,128.74
  5. Step 5: Solve for x
    x = 128,384,128.74/15,415.81
  6. Step 6: Final answer
    x = 8,328.08

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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.