Home / 28,197.06-38,911.94-15,621.82

Finding the Fourth Proportional to 28,197.06, 38,911.94 and 15,621.82

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Solution

The fourth proportional to 28,197.06, 38,911.94 and 15,621.82 is: 21,558.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,197.06 : 38,911.94 = 15,621.82 : x
  2. Step 2: Convert to fraction form
    28,197.06/38,911.94 = 15,621.82/x
  3. Step 3: Cross multiply
    28,197.06x = 38,911.94 × 15,621.82
  4. Step 4: Simplify right side
    28,197.06x = 607,875,322.53
  5. Step 5: Solve for x
    x = 607,875,322.53/28,197.06
  6. Step 6: Final answer
    x = 21,558.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.