Home / 12,115.71-16,719.75-6,810.48

Finding the Fourth Proportional to 12,115.71, 16,719.75 and 6,810.48

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Solution

The fourth proportional to 12,115.71, 16,719.75 and 6,810.48 is: 9,398.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.71 : 16,719.75 = 6,810.48 : x
  2. Step 2: Convert to fraction form
    12,115.71/16,719.75 = 6,810.48/x
  3. Step 3: Cross multiply
    12,115.71x = 16,719.75 × 6,810.48
  4. Step 4: Simplify right side
    12,115.71x = 113,869,522.98
  5. Step 5: Solve for x
    x = 113,869,522.98/12,115.71
  6. Step 6: Final answer
    x = 9,398.50

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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.