Home / 13,085.12-19,628.32-4,319.84

Finding the Fourth Proportional to 13,085.12, 19,628.32 and 4,319.84

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Solution

The fourth proportional to 13,085.12, 19,628.32 and 4,319.84 is: 6,479.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,085.12 : 19,628.32 = 4,319.84 : x
  2. Step 2: Convert to fraction form
    13,085.12/19,628.32 = 4,319.84/x
  3. Step 3: Cross multiply
    13,085.12x = 19,628.32 × 4,319.84
  4. Step 4: Simplify right side
    13,085.12x = 84,791,201.87
  5. Step 5: Solve for x
    x = 84,791,201.87/13,085.12
  6. Step 6: Final answer
    x = 6,479.97

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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.