Home / 10,978.65-15,148.41-6,503.27

Finding the Fourth Proportional to 10,978.65, 15,148.41 and 6,503.27

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Solution

The fourth proportional to 10,978.65, 15,148.41 and 6,503.27 is: 8,973.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,978.65 : 15,148.41 = 6,503.27 : x
  2. Step 2: Convert to fraction form
    10,978.65/15,148.41 = 6,503.27/x
  3. Step 3: Cross multiply
    10,978.65x = 15,148.41 × 6,503.27
  4. Step 4: Simplify right side
    10,978.65x = 98,514,124.56
  5. Step 5: Solve for x
    x = 98,514,124.56/10,978.65
  6. Step 6: Final answer
    x = 8,973.25

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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.