Home / 10,988.80-16,464.30-5,133.40

Finding the Fourth Proportional to 10,988.80, 16,464.30 and 5,133.40

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Solution

The fourth proportional to 10,988.80, 16,464.30 and 5,133.40 is: 7,691.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.80 : 16,464.30 = 5,133.40 : x
  2. Step 2: Convert to fraction form
    10,988.80/16,464.30 = 5,133.40/x
  3. Step 3: Cross multiply
    10,988.80x = 16,464.30 × 5,133.40
  4. Step 4: Simplify right side
    10,988.80x = 84,517,837.62
  5. Step 5: Solve for x
    x = 84,517,837.62/10,988.80
  6. Step 6: Final answer
    x = 7,691.27

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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.