Home / 11,220.36-15,478.40-8,563.16

Finding the Fourth Proportional to 11,220.36, 15,478.40 and 8,563.16

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Solution

The fourth proportional to 11,220.36, 15,478.40 and 8,563.16 is: 11,812.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.36 : 15,478.40 = 8,563.16 : x
  2. Step 2: Convert to fraction form
    11,220.36/15,478.40 = 8,563.16/x
  3. Step 3: Cross multiply
    11,220.36x = 15,478.40 × 8,563.16
  4. Step 4: Simplify right side
    11,220.36x = 132,543,959.76
  5. Step 5: Solve for x
    x = 132,543,959.76/11,220.36
  6. Step 6: Final answer
    x = 11,812.81

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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.