Home / 47,215.38-70,839.48-20,938.62

Finding the Fourth Proportional to 47,215.38, 70,839.48 and 20,938.62

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Solution

The fourth proportional to 47,215.38, 70,839.48 and 20,938.62 is: 31,415.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,215.38 : 70,839.48 = 20,938.62 : x
  2. Step 2: Convert to fraction form
    47,215.38/70,839.48 = 20,938.62/x
  3. Step 3: Cross multiply
    47,215.38x = 70,839.48 × 20,938.62
  4. Step 4: Simplify right side
    47,215.38x = 1,483,280,952.72
  5. Step 5: Solve for x
    x = 1,483,280,952.72/47,215.38
  6. Step 6: Final answer
    x = 31,415.21

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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.