Home / 10,318.72-14,239.68-5,602.88

Finding the Fourth Proportional to 10,318.72, 14,239.68 and 5,602.88

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Solution

The fourth proportional to 10,318.72, 14,239.68 and 5,602.88 is: 7,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318.72 : 14,239.68 = 5,602.88 : x
  2. Step 2: Convert to fraction form
    10,318.72/14,239.68 = 5,602.88/x
  3. Step 3: Cross multiply
    10,318.72x = 14,239.68 × 5,602.88
  4. Step 4: Simplify right side
    10,318.72x = 79,783,218.28
  5. Step 5: Solve for x
    x = 79,783,218.28/10,318.72
  6. Step 6: Final answer
    x = 7,731.89

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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.