Home / 11,319.60-15,620.40-6,602.16

Finding the Fourth Proportional to 11,319.60, 15,620.40 and 6,602.16

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Solution

The fourth proportional to 11,319.60, 15,620.40 and 6,602.16 is: 9,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.60 : 15,620.40 = 6,602.16 : x
  2. Step 2: Convert to fraction form
    11,319.60/15,620.40 = 6,602.16/x
  3. Step 3: Cross multiply
    11,319.60x = 15,620.40 × 6,602.16
  4. Step 4: Simplify right side
    11,319.60x = 103,128,380.06
  5. Step 5: Solve for x
    x = 103,128,380.06/11,319.60
  6. Step 6: Final answer
    x = 9,110.60

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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.