Home / 51,178.20-76,767.30-21,588.18

Finding the Fourth Proportional to 51,178.20, 76,767.30 and 21,588.18

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Solution

The fourth proportional to 51,178.20, 76,767.30 and 21,588.18 is: 32,382.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,178.20 : 76,767.30 = 21,588.18 : x
  2. Step 2: Convert to fraction form
    51,178.20/76,767.30 = 21,588.18/x
  3. Step 3: Cross multiply
    51,178.20x = 76,767.30 × 21,588.18
  4. Step 4: Simplify right side
    51,178.20x = 1,657,266,290.51
  5. Step 5: Solve for x
    x = 1,657,266,290.51/51,178.20
  6. Step 6: Final answer
    x = 32,382.27

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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.