Home / 10,265.40-15,399.36-4,420.80

Finding the Fourth Proportional to 10,265.40, 15,399.36 and 4,420.80

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Solution

The fourth proportional to 10,265.40, 15,399.36 and 4,420.80 is: 6,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,265.40 : 15,399.36 = 4,420.80 : x
  2. Step 2: Convert to fraction form
    10,265.40/15,399.36 = 4,420.80/x
  3. Step 3: Cross multiply
    10,265.40x = 15,399.36 × 4,420.80
  4. Step 4: Simplify right side
    10,265.40x = 68,077,490.69
  5. Step 5: Solve for x
    x = 68,077,490.69/10,265.40
  6. Step 6: Final answer
    x = 6,631.74

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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.