Home / 13,664.50-20,497.28-4,778.10

Finding the Fourth Proportional to 13,664.50, 20,497.28 and 4,778.10

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Solution

The fourth proportional to 13,664.50, 20,497.28 and 4,778.10 is: 7,167.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.50 : 20,497.28 = 4,778.10 : x
  2. Step 2: Convert to fraction form
    13,664.50/20,497.28 = 4,778.10/x
  3. Step 3: Cross multiply
    13,664.50x = 20,497.28 × 4,778.10
  4. Step 4: Simplify right side
    13,664.50x = 97,938,053.57
  5. Step 5: Solve for x
    x = 97,938,053.57/13,664.50
  6. Step 6: Final answer
    x = 7,167.34

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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.