Home / 51,425.40-77,166.90-21,838.20

Finding the Fourth Proportional to 51,425.40, 77,166.90 and 21,838.20

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Solution

The fourth proportional to 51,425.40, 77,166.90 and 21,838.20 is: 32,769.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,425.40 : 77,166.90 = 21,838.20 : x
  2. Step 2: Convert to fraction form
    51,425.40/77,166.90 = 21,838.20/x
  3. Step 3: Cross multiply
    51,425.40x = 77,166.90 × 21,838.20
  4. Step 4: Simplify right side
    51,425.40x = 1,685,186,195.58
  5. Step 5: Solve for x
    x = 1,685,186,195.58/51,425.40
  6. Step 6: Final answer
    x = 32,769.53

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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.