Home / 11,200.02-15,460.80-7,971.92

Finding the Fourth Proportional to 11,200.02, 15,460.80 and 7,971.92

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Solution

The fourth proportional to 11,200.02, 15,460.80 and 7,971.92 is: 11,004.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,200.02 : 15,460.80 = 7,971.92 : x
  2. Step 2: Convert to fraction form
    11,200.02/15,460.80 = 7,971.92/x
  3. Step 3: Cross multiply
    11,200.02x = 15,460.80 × 7,971.92
  4. Step 4: Simplify right side
    11,200.02x = 123,252,260.74
  5. Step 5: Solve for x
    x = 123,252,260.74/11,200.02
  6. Step 6: Final answer
    x = 11,004.65

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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.