Home / 28,079.34-38,747.78-15,330

Finding the Fourth Proportional to 28,079.34, 38,747.78 and 15,330

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Solution

The fourth proportional to 28,079.34, 38,747.78 and 15,330 is: 21,154.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.34 : 38,747.78 = 15,330 : x
  2. Step 2: Convert to fraction form
    28,079.34/38,747.78 = 15,330/x
  3. Step 3: Cross multiply
    28,079.34x = 38,747.78 × 15,330
  4. Step 4: Simplify right side
    28,079.34x = 594,003,467.40
  5. Step 5: Solve for x
    x = 594,003,467.40/28,079.34
  6. Step 6: Final answer
    x = 21,154.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.