Home / 10,129.74-15,194.54-3,109.74

Finding the Fourth Proportional to 10,129.74, 15,194.54 and 3,109.74

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Solution

The fourth proportional to 10,129.74, 15,194.54 and 3,109.74 is: 4,664.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.74 : 15,194.54 = 3,109.74 : x
  2. Step 2: Convert to fraction form
    10,129.74/15,194.54 = 3,109.74/x
  3. Step 3: Cross multiply
    10,129.74x = 15,194.54 × 3,109.74
  4. Step 4: Simplify right side
    10,129.74x = 47,251,068.82
  5. Step 5: Solve for x
    x = 47,251,068.82/10,129.74
  6. Step 6: Final answer
    x = 4,664.59

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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.