Home / 12,628.32-18,931.68-4,842.72

Finding the Fourth Proportional to 12,628.32, 18,931.68 and 4,842.72

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Solution

The fourth proportional to 12,628.32, 18,931.68 and 4,842.72 is: 7,259.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.32 : 18,931.68 = 4,842.72 : x
  2. Step 2: Convert to fraction form
    12,628.32/18,931.68 = 4,842.72/x
  3. Step 3: Cross multiply
    12,628.32x = 18,931.68 × 4,842.72
  4. Step 4: Simplify right side
    12,628.32x = 91,680,825.37
  5. Step 5: Solve for x
    x = 91,680,825.37/12,628.32
  6. Step 6: Final answer
    x = 7,259.94

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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.