Home / 18,754.79-28,127.99-5,605.45

Finding the Fourth Proportional to 18,754.79, 28,127.99 and 5,605.45

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Solution

The fourth proportional to 18,754.79, 28,127.99 and 5,605.45 is: 8,406.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.79 : 28,127.99 = 5,605.45 : x
  2. Step 2: Convert to fraction form
    18,754.79/28,127.99 = 5,605.45/x
  3. Step 3: Cross multiply
    18,754.79x = 28,127.99 × 5,605.45
  4. Step 4: Simplify right side
    18,754.79x = 157,669,985.24
  5. Step 5: Solve for x
    x = 157,669,985.24/18,754.79
  6. Step 6: Final answer
    x = 8,406.92

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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.