Home / 13,392.64-20,066.28-8,111.69

Finding the Fourth Proportional to 13,392.64, 20,066.28 and 8,111.69

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Solution

The fourth proportional to 13,392.64, 20,066.28 and 8,111.69 is: 12,153.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392.64 : 20,066.28 = 8,111.69 : x
  2. Step 2: Convert to fraction form
    13,392.64/20,066.28 = 8,111.69/x
  3. Step 3: Cross multiply
    13,392.64x = 20,066.28 × 8,111.69
  4. Step 4: Simplify right side
    13,392.64x = 162,771,545.81
  5. Step 5: Solve for x
    x = 162,771,545.81/13,392.64
  6. Step 6: Final answer
    x = 12,153.80

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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.