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Finding the Fourth Proportional to 10,386.03, 15,579.11 and 4,147.62

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Solution

The fourth proportional to 10,386.03, 15,579.11 and 4,147.62 is: 6,221.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,386.03 : 15,579.11 = 4,147.62 : x
  2. Step 2: Convert to fraction form
    10,386.03/15,579.11 = 4,147.62/x
  3. Step 3: Cross multiply
    10,386.03x = 15,579.11 × 4,147.62
  4. Step 4: Simplify right side
    10,386.03x = 64,616,228.22
  5. Step 5: Solve for x
    x = 64,616,228.22/10,386.03
  6. Step 6: Final answer
    x = 6,221.46

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1.5x scale

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.