Home / 10,346.62-15,533.70-5,420.20

Finding the Fourth Proportional to 10,346.62, 15,533.70 and 5,420.20

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Solution

The fourth proportional to 10,346.62, 15,533.70 and 5,420.20 is: 8,137.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,346.62 : 15,533.70 = 5,420.20 : x
  2. Step 2: Convert to fraction form
    10,346.62/15,533.70 = 5,420.20/x
  3. Step 3: Cross multiply
    10,346.62x = 15,533.70 × 5,420.20
  4. Step 4: Simplify right side
    10,346.62x = 84,195,760.74
  5. Step 5: Solve for x
    x = 84,195,760.74/10,346.62
  6. Step 6: Final answer
    x = 8,137.51

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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.