Home / 10,420.60-15,621.54-3,842.32

Finding the Fourth Proportional to 10,420.60, 15,621.54 and 3,842.32

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Solution

The fourth proportional to 10,420.60, 15,621.54 and 3,842.32 is: 5,760.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.60 : 15,621.54 = 3,842.32 : x
  2. Step 2: Convert to fraction form
    10,420.60/15,621.54 = 3,842.32/x
  3. Step 3: Cross multiply
    10,420.60x = 15,621.54 × 3,842.32
  4. Step 4: Simplify right side
    10,420.60x = 60,022,955.57
  5. Step 5: Solve for x
    x = 60,022,955.57/10,420.60
  6. Step 6: Final answer
    x = 5,760.03

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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.