Home / 30,331.13-45,499.05-13,700.48

Finding the Fourth Proportional to 30,331.13, 45,499.05 and 13,700.48

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Solution

The fourth proportional to 30,331.13, 45,499.05 and 13,700.48 is: 20,551.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,331.13 : 45,499.05 = 13,700.48 : x
  2. Step 2: Convert to fraction form
    30,331.13/45,499.05 = 13,700.48/x
  3. Step 3: Cross multiply
    30,331.13x = 45,499.05 × 13,700.48
  4. Step 4: Simplify right side
    30,331.13x = 623,358,597.05
  5. Step 5: Solve for x
    x = 623,358,597.05/30,331.13
  6. Step 6: Final answer
    x = 20,551.78

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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.