Home / 11,820.33-16,312.15-6,515.16

Finding the Fourth Proportional to 11,820.33, 16,312.15 and 6,515.16

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Solution

The fourth proportional to 11,820.33, 16,312.15 and 6,515.16 is: 8,990.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.33 : 16,312.15 = 6,515.16 : x
  2. Step 2: Convert to fraction form
    11,820.33/16,312.15 = 6,515.16/x
  3. Step 3: Cross multiply
    11,820.33x = 16,312.15 × 6,515.16
  4. Step 4: Simplify right side
    11,820.33x = 106,276,267.19
  5. Step 5: Solve for x
    x = 106,276,267.19/11,820.33
  6. Step 6: Final answer
    x = 8,990.97

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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.