Home / 13,603.28-20,407.92-8,061.68

Finding the Fourth Proportional to 13,603.28, 20,407.92 and 8,061.68

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Solution

The fourth proportional to 13,603.28, 20,407.92 and 8,061.68 is: 12,094.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.28 : 20,407.92 = 8,061.68 : x
  2. Step 2: Convert to fraction form
    13,603.28/20,407.92 = 8,061.68/x
  3. Step 3: Cross multiply
    13,603.28x = 20,407.92 × 8,061.68
  4. Step 4: Simplify right side
    13,603.28x = 164,522,120.51
  5. Step 5: Solve for x
    x = 164,522,120.51/13,603.28
  6. Step 6: Final answer
    x = 12,094.30

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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.