Home / 18,718.17-28,077.30-4,867.17

Finding the Fourth Proportional to 18,718.17, 28,077.30 and 4,867.17

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Solution

The fourth proportional to 18,718.17, 28,077.30 and 4,867.17 is: 7,300.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.17 : 28,077.30 = 4,867.17 : x
  2. Step 2: Convert to fraction form
    18,718.17/28,077.30 = 4,867.17/x
  3. Step 3: Cross multiply
    18,718.17x = 28,077.30 × 4,867.17
  4. Step 4: Simplify right side
    18,718.17x = 136,656,992.24
  5. Step 5: Solve for x
    x = 136,656,992.24/18,718.17
  6. Step 6: Final answer
    x = 7,300.77

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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.