Home / 12,177.60-16,804.80-7,209.60

Finding the Fourth Proportional to 12,177.60, 16,804.80 and 7,209.60

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Solution

The fourth proportional to 12,177.60, 16,804.80 and 7,209.60 is: 9,949.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,177.60 : 16,804.80 = 7,209.60 : x
  2. Step 2: Convert to fraction form
    12,177.60/16,804.80 = 7,209.60/x
  3. Step 3: Cross multiply
    12,177.60x = 16,804.80 × 7,209.60
  4. Step 4: Simplify right side
    12,177.60x = 121,155,886.08
  5. Step 5: Solve for x
    x = 121,155,886.08/12,177.60
  6. Step 6: Final answer
    x = 9,949.08

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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.