Home / 19,515.20-29,239.20-9,105.60

Finding the Fourth Proportional to 19,515.20, 29,239.20 and 9,105.60

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Solution

The fourth proportional to 19,515.20, 29,239.20 and 9,105.60 is: 13,642.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,515.20 : 29,239.20 = 9,105.60 : x
  2. Step 2: Convert to fraction form
    19,515.20/29,239.20 = 9,105.60/x
  3. Step 3: Cross multiply
    19,515.20x = 29,239.20 × 9,105.60
  4. Step 4: Simplify right side
    19,515.20x = 266,240,459.52
  5. Step 5: Solve for x
    x = 266,240,459.52/19,515.20
  6. Step 6: Final answer
    x = 13,642.72

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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.