Home / 37,678.50-51,998.76-20,911.50

Finding the Fourth Proportional to 37,678.50, 51,998.76 and 20,911.50

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Solution

The fourth proportional to 37,678.50, 51,998.76 and 20,911.50 is: 28,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,678.50 : 51,998.76 = 20,911.50 : x
  2. Step 2: Convert to fraction form
    37,678.50/51,998.76 = 20,911.50/x
  3. Step 3: Cross multiply
    37,678.50x = 51,998.76 × 20,911.50
  4. Step 4: Simplify right side
    37,678.50x = 1,087,372,069.74
  5. Step 5: Solve for x
    x = 1,087,372,069.74/37,678.50
  6. Step 6: Final answer
    x = 28,859.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.