Home / 53,421.57-80,137.80-18,356.67

Finding the Fourth Proportional to 53,421.57, 80,137.80 and 18,356.67

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Solution

The fourth proportional to 53,421.57, 80,137.80 and 18,356.67 is: 27,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,421.57 : 80,137.80 = 18,356.67 : x
  2. Step 2: Convert to fraction form
    53,421.57/80,137.80 = 18,356.67/x
  3. Step 3: Cross multiply
    53,421.57x = 80,137.80 × 18,356.67
  4. Step 4: Simplify right side
    53,421.57x = 1,471,063,149.13
  5. Step 5: Solve for x
    x = 1,471,063,149.13/53,421.57
  6. Step 6: Final answer
    x = 27,536.88

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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.