Home / 10,420.79-15,633.63-3,025.40

Finding the Fourth Proportional to 10,420.79, 15,633.63 and 3,025.40

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Solution

The fourth proportional to 10,420.79, 15,633.63 and 3,025.40 is: 4,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.79 : 15,633.63 = 3,025.40 : x
  2. Step 2: Convert to fraction form
    10,420.79/15,633.63 = 3,025.40/x
  3. Step 3: Cross multiply
    10,420.79x = 15,633.63 × 3,025.40
  4. Step 4: Simplify right side
    10,420.79x = 47,297,906.03
  5. Step 5: Solve for x
    x = 47,297,906.03/10,420.79
  6. Step 6: Final answer
    x = 4,538.80

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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.