Home / 10,239.50-14,120.07-9,644.30

Finding the Fourth Proportional to 10,239.50, 14,120.07 and 9,644.30

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Solution

The fourth proportional to 10,239.50, 14,120.07 and 9,644.30 is: 13,299.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,239.50 : 14,120.07 = 9,644.30 : x
  2. Step 2: Convert to fraction form
    10,239.50/14,120.07 = 9,644.30/x
  3. Step 3: Cross multiply
    10,239.50x = 14,120.07 × 9,644.30
  4. Step 4: Simplify right side
    10,239.50x = 136,178,191.10
  5. Step 5: Solve for x
    x = 136,178,191.10/10,239.50
  6. Step 6: Final answer
    x = 13,299.30

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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.