Home / 11,820.16-16,311.95-6,515.17

Finding the Fourth Proportional to 11,820.16, 16,311.95 and 6,515.17

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Solution

The fourth proportional to 11,820.16, 16,311.95 and 6,515.17 is: 8,991.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.16 : 16,311.95 = 6,515.17 : x
  2. Step 2: Convert to fraction form
    11,820.16/16,311.95 = 6,515.17/x
  3. Step 3: Cross multiply
    11,820.16x = 16,311.95 × 6,515.17
  4. Step 4: Simplify right side
    11,820.16x = 106,275,078.36
  5. Step 5: Solve for x
    x = 106,275,078.36/11,820.16
  6. Step 6: Final answer
    x = 8,991.00

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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.