Home / 12,798.08-17,662.40-7,209.60

Finding the Fourth Proportional to 12,798.08, 17,662.40 and 7,209.60

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Solution

The fourth proportional to 12,798.08, 17,662.40 and 7,209.60 is: 9,949.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.08 : 17,662.40 = 7,209.60 : x
  2. Step 2: Convert to fraction form
    12,798.08/17,662.40 = 7,209.60/x
  3. Step 3: Cross multiply
    12,798.08x = 17,662.40 × 7,209.60
  4. Step 4: Simplify right side
    12,798.08x = 127,338,839.04
  5. Step 5: Solve for x
    x = 127,338,839.04/12,798.08
  6. Step 6: Final answer
    x = 9,949.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.