Home / 28,208.48-42,320.40-9,743.20

Finding the Fourth Proportional to 28,208.48, 42,320.40 and 9,743.20

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Solution

The fourth proportional to 28,208.48, 42,320.40 and 9,743.20 is: 14,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.48 : 42,320.40 = 9,743.20 : x
  2. Step 2: Convert to fraction form
    28,208.48/42,320.40 = 9,743.20/x
  3. Step 3: Cross multiply
    28,208.48x = 42,320.40 × 9,743.20
  4. Step 4: Simplify right side
    28,208.48x = 412,336,121.28
  5. Step 5: Solve for x
    x = 412,336,121.28/28,208.48
  6. Step 6: Final answer
    x = 14,617.45

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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.