Home / 10,139.09-15,211.01-3,213.59

Finding the Fourth Proportional to 10,139.09, 15,211.01 and 3,213.59

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Solution

The fourth proportional to 10,139.09, 15,211.01 and 3,213.59 is: 4,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.09 : 15,211.01 = 3,213.59 : x
  2. Step 2: Convert to fraction form
    10,139.09/15,211.01 = 3,213.59/x
  3. Step 3: Cross multiply
    10,139.09x = 15,211.01 × 3,213.59
  4. Step 4: Simplify right side
    10,139.09x = 48,881,881.60
  5. Step 5: Solve for x
    x = 48,881,881.60/10,139.09
  6. Step 6: Final answer
    x = 4,821.13

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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.