Home / 13,565.50-20,440.68-11,154.33

Finding the Fourth Proportional to 13,565.50, 20,440.68 and 11,154.33

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Solution

The fourth proportional to 13,565.50, 20,440.68 and 11,154.33 is: 16,807.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.50 : 20,440.68 = 11,154.33 : x
  2. Step 2: Convert to fraction form
    13,565.50/20,440.68 = 11,154.33/x
  3. Step 3: Cross multiply
    13,565.50x = 20,440.68 × 11,154.33
  4. Step 4: Simplify right side
    13,565.50x = 228,002,090.14
  5. Step 5: Solve for x
    x = 228,002,090.14/13,565.50
  6. Step 6: Final answer
    x = 16,807.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.