Home / 28,198.24-38,913.84-15,624.16

Finding the Fourth Proportional to 28,198.24, 38,913.84 and 15,624.16

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Solution

The fourth proportional to 28,198.24, 38,913.84 and 15,624.16 is: 21,561.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.24 : 38,913.84 = 15,624.16 : x
  2. Step 2: Convert to fraction form
    28,198.24/38,913.84 = 15,624.16/x
  3. Step 3: Cross multiply
    28,198.24x = 38,913.84 × 15,624.16
  4. Step 4: Simplify right side
    28,198.24x = 607,996,062.37
  5. Step 5: Solve for x
    x = 607,996,062.37/28,198.24
  6. Step 6: Final answer
    x = 21,561.49

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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.