Home / 11,875.34-16,387.48-6,839.76

Finding the Fourth Proportional to 11,875.34, 16,387.48 and 6,839.76

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Solution

The fourth proportional to 11,875.34, 16,387.48 and 6,839.76 is: 9,438.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,875.34 : 16,387.48 = 6,839.76 : x
  2. Step 2: Convert to fraction form
    11,875.34/16,387.48 = 6,839.76/x
  3. Step 3: Cross multiply
    11,875.34x = 16,387.48 × 6,839.76
  4. Step 4: Simplify right side
    11,875.34x = 112,086,430.20
  5. Step 5: Solve for x
    x = 112,086,430.20/11,875.34
  6. Step 6: Final answer
    x = 9,438.59

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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.