Home / 11,117.90-16,652.16-7,988.51

Finding the Fourth Proportional to 11,117.90, 16,652.16 and 7,988.51

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Solution

The fourth proportional to 11,117.90, 16,652.16 and 7,988.51 is: 11,965.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.90 : 16,652.16 = 7,988.51 : x
  2. Step 2: Convert to fraction form
    11,117.90/16,652.16 = 7,988.51/x
  3. Step 3: Cross multiply
    11,117.90x = 16,652.16 × 7,988.51
  4. Step 4: Simplify right side
    11,117.90x = 133,025,863.42
  5. Step 5: Solve for x
    x = 133,025,863.42/11,117.90
  6. Step 6: Final answer
    x = 11,965.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.