Home / 15,222.81-21,007.05-8,508.48

Finding the Fourth Proportional to 15,222.81, 21,007.05 and 8,508.48

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Solution

The fourth proportional to 15,222.81, 21,007.05 and 8,508.48 is: 11,741.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.81 : 21,007.05 = 8,508.48 : x
  2. Step 2: Convert to fraction form
    15,222.81/21,007.05 = 8,508.48/x
  3. Step 3: Cross multiply
    15,222.81x = 21,007.05 × 8,508.48
  4. Step 4: Simplify right side
    15,222.81x = 178,738,064.78
  5. Step 5: Solve for x
    x = 178,738,064.78/15,222.81
  6. Step 6: Final answer
    x = 11,741.46

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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.