Home / 10,420.04-15,618.72-3,840.68

Finding the Fourth Proportional to 10,420.04, 15,618.72 and 3,840.68

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Solution

The fourth proportional to 10,420.04, 15,618.72 and 3,840.68 is: 5,756.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.04 : 15,618.72 = 3,840.68 : x
  2. Step 2: Convert to fraction form
    10,420.04/15,618.72 = 3,840.68/x
  3. Step 3: Cross multiply
    10,420.04x = 15,618.72 × 3,840.68
  4. Step 4: Simplify right side
    10,420.04x = 59,986,505.53
  5. Step 5: Solve for x
    x = 59,986,505.53/10,420.04
  6. Step 6: Final answer
    x = 5,756.84

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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.