Home / 12,697.28-19,011.72-10,347.68

Finding the Fourth Proportional to 12,697.28, 19,011.72 and 10,347.68

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Solution

The fourth proportional to 12,697.28, 19,011.72 and 10,347.68 is: 15,493.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,697.28 : 19,011.72 = 10,347.68 : x
  2. Step 2: Convert to fraction form
    12,697.28/19,011.72 = 10,347.68/x
  3. Step 3: Cross multiply
    12,697.28x = 19,011.72 × 10,347.68
  4. Step 4: Simplify right side
    12,697.28x = 196,727,194.81
  5. Step 5: Solve for x
    x = 196,727,194.81/12,697.28
  6. Step 6: Final answer
    x = 15,493.65

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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.