Home / 36,312.23-54,468.31-12,619.78

Finding the Fourth Proportional to 36,312.23, 54,468.31 and 12,619.78

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Solution

The fourth proportional to 36,312.23, 54,468.31 and 12,619.78 is: 18,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,312.23 : 54,468.31 = 12,619.78 : x
  2. Step 2: Convert to fraction form
    36,312.23/54,468.31 = 12,619.78/x
  3. Step 3: Cross multiply
    36,312.23x = 54,468.31 × 12,619.78
  4. Step 4: Simplify right side
    36,312.23x = 687,378,089.17
  5. Step 5: Solve for x
    x = 687,378,089.17/36,312.23
  6. Step 6: Final answer
    x = 18,929.66

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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.