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Finding the Fourth Proportional to 13,491.77, 20,248.04 and 8,810.51

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Solution

The fourth proportional to 13,491.77, 20,248.04 and 8,810.51 is: 13,222.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.77 : 20,248.04 = 8,810.51 : x
  2. Step 2: Convert to fraction form
    13,491.77/20,248.04 = 8,810.51/x
  3. Step 3: Cross multiply
    13,491.77x = 20,248.04 × 8,810.51
  4. Step 4: Simplify right side
    13,491.77x = 178,395,479.69
  5. Step 5: Solve for x
    x = 178,395,479.69/13,491.77
  6. Step 6: Final answer
    x = 13,222.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.