Home / 37,979.12-56,981.64-20,450.72

Finding the Fourth Proportional to 37,979.12, 56,981.64 and 20,450.72

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Solution

The fourth proportional to 37,979.12, 56,981.64 and 20,450.72 is: 30,683.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,979.12 : 56,981.64 = 20,450.72 : x
  2. Step 2: Convert to fraction form
    37,979.12/56,981.64 = 20,450.72/x
  3. Step 3: Cross multiply
    37,979.12x = 56,981.64 × 20,450.72
  4. Step 4: Simplify right side
    37,979.12x = 1,165,315,564.78
  5. Step 5: Solve for x
    x = 1,165,315,564.78/37,979.12
  6. Step 6: Final answer
    x = 30,683.06

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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.