Home / 11,116.64-16,666.80-5,266.40

Finding the Fourth Proportional to 11,116.64, 16,666.80 and 5,266.40

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Solution

The fourth proportional to 11,116.64, 16,666.80 and 5,266.40 is: 7,895.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.64 : 16,666.80 = 5,266.40 : x
  2. Step 2: Convert to fraction form
    11,116.64/16,666.80 = 5,266.40/x
  3. Step 3: Cross multiply
    11,116.64x = 16,666.80 × 5,266.40
  4. Step 4: Simplify right side
    11,116.64x = 87,774,035.52
  5. Step 5: Solve for x
    x = 87,774,035.52/11,116.64
  6. Step 6: Final answer
    x = 7,895.73

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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.