Home / 11,316.80-15,617.12-6,280.88

Finding the Fourth Proportional to 11,316.80, 15,617.12 and 6,280.88

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Solution

The fourth proportional to 11,316.80, 15,617.12 and 6,280.88 is: 8,667.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.80 : 15,617.12 = 6,280.88 : x
  2. Step 2: Convert to fraction form
    11,316.80/15,617.12 = 6,280.88/x
  3. Step 3: Cross multiply
    11,316.80x = 15,617.12 × 6,280.88
  4. Step 4: Simplify right side
    11,316.80x = 98,089,256.67
  5. Step 5: Solve for x
    x = 98,089,256.67/11,316.80
  6. Step 6: Final answer
    x = 8,667.58

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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.