Home / 30,133.86-45,209.25-11,158.20

Finding the Fourth Proportional to 30,133.86, 45,209.25 and 11,158.20

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Solution

The fourth proportional to 30,133.86, 45,209.25 and 11,158.20 is: 16,740.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,133.86 : 45,209.25 = 11,158.20 : x
  2. Step 2: Convert to fraction form
    30,133.86/45,209.25 = 11,158.20/x
  3. Step 3: Cross multiply
    30,133.86x = 45,209.25 × 11,158.20
  4. Step 4: Simplify right side
    30,133.86x = 504,453,981.04
  5. Step 5: Solve for x
    x = 504,453,981.04/30,133.86
  6. Step 6: Final answer
    x = 16,740.44

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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.