Home / 12,621.51-18,928.82-5,224.19

Finding the Fourth Proportional to 12,621.51, 18,928.82 and 5,224.19

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Solution

The fourth proportional to 12,621.51, 18,928.82 and 5,224.19 is: 7,834.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.51 : 18,928.82 = 5,224.19 : x
  2. Step 2: Convert to fraction form
    12,621.51/18,928.82 = 5,224.19/x
  3. Step 3: Cross multiply
    12,621.51x = 18,928.82 × 5,224.19
  4. Step 4: Simplify right side
    12,621.51x = 98,887,631.39
  5. Step 5: Solve for x
    x = 98,887,631.39/12,621.51
  6. Step 6: Final answer
    x = 7,834.85

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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.