Home / 10,355.20-15,532.80-5,434.45

Finding the Fourth Proportional to 10,355.20, 15,532.80 and 5,434.45

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Solution

The fourth proportional to 10,355.20, 15,532.80 and 5,434.45 is: 8,151.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.20 : 15,532.80 = 5,434.45 : x
  2. Step 2: Convert to fraction form
    10,355.20/15,532.80 = 5,434.45/x
  3. Step 3: Cross multiply
    10,355.20x = 15,532.80 × 5,434.45
  4. Step 4: Simplify right side
    10,355.20x = 84,412,224.96
  5. Step 5: Solve for x
    x = 84,412,224.96/10,355.20
  6. Step 6: Final answer
    x = 8,151.68

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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.