Home / 36,780.12-55,153.80-10,478.64

Finding the Fourth Proportional to 36,780.12, 55,153.80 and 10,478.64

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Solution

The fourth proportional to 36,780.12, 55,153.80 and 10,478.64 is: 15,713.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,780.12 : 55,153.80 = 10,478.64 : x
  2. Step 2: Convert to fraction form
    36,780.12/55,153.80 = 10,478.64/x
  3. Step 3: Cross multiply
    36,780.12x = 55,153.80 × 10,478.64
  4. Step 4: Simplify right side
    36,780.12x = 577,936,814.83
  5. Step 5: Solve for x
    x = 577,936,814.83/36,780.12
  6. Step 6: Final answer
    x = 15,713.29

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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.