Home / 11,239.80-16,838.64-9,402.72

Finding the Fourth Proportional to 11,239.80, 16,838.64 and 9,402.72

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Solution

The fourth proportional to 11,239.80, 16,838.64 and 9,402.72 is: 14,086.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.80 : 16,838.64 = 9,402.72 : x
  2. Step 2: Convert to fraction form
    11,239.80/16,838.64 = 9,402.72/x
  3. Step 3: Cross multiply
    11,239.80x = 16,838.64 × 9,402.72
  4. Step 4: Simplify right side
    11,239.80x = 158,329,017.10
  5. Step 5: Solve for x
    x = 158,329,017.10/11,239.80
  6. Step 6: Final answer
    x = 14,086.46

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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.