Home / 35,387.20-48,832.08-20,279.68

Finding the Fourth Proportional to 35,387.20, 48,832.08 and 20,279.68

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Solution

The fourth proportional to 35,387.20, 48,832.08 and 20,279.68 is: 27,984.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,387.20 : 48,832.08 = 20,279.68 : x
  2. Step 2: Convert to fraction form
    35,387.20/48,832.08 = 20,279.68/x
  3. Step 3: Cross multiply
    35,387.20x = 48,832.08 × 20,279.68
  4. Step 4: Simplify right side
    35,387.20x = 990,298,956.13
  5. Step 5: Solve for x
    x = 990,298,956.13/35,387.20
  6. Step 6: Final answer
    x = 27,984.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.