Home / 12,310.44-16,988.34-6,721.40

Finding the Fourth Proportional to 12,310.44, 16,988.34 and 6,721.40

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Solution

The fourth proportional to 12,310.44, 16,988.34 and 6,721.40 is: 9,275.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.44 : 16,988.34 = 6,721.40 : x
  2. Step 2: Convert to fraction form
    12,310.44/16,988.34 = 6,721.40/x
  3. Step 3: Cross multiply
    12,310.44x = 16,988.34 × 6,721.40
  4. Step 4: Simplify right side
    12,310.44x = 114,185,428.48
  5. Step 5: Solve for x
    x = 114,185,428.48/12,310.44
  6. Step 6: Final answer
    x = 9,275.50

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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.