Home / 39,285.71-54,215.51-22,290.67

Finding the Fourth Proportional to 39,285.71, 54,215.51 and 22,290.67

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Solution

The fourth proportional to 39,285.71, 54,215.51 and 22,290.67 is: 30,761.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,285.71 : 54,215.51 = 22,290.67 : x
  2. Step 2: Convert to fraction form
    39,285.71/54,215.51 = 22,290.67/x
  3. Step 3: Cross multiply
    39,285.71x = 54,215.51 × 22,290.67
  4. Step 4: Simplify right side
    39,285.71x = 1,208,500,042.29
  5. Step 5: Solve for x
    x = 1,208,500,042.29/39,285.71
  6. Step 6: Final answer
    x = 30,761.82

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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.