Home / 28,189.23-38,901.03-15,442.40

Finding the Fourth Proportional to 28,189.23, 38,901.03 and 15,442.40

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Solution

The fourth proportional to 28,189.23, 38,901.03 and 15,442.40 is: 21,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.23 : 38,901.03 = 15,442.40 : x
  2. Step 2: Convert to fraction form
    28,189.23/38,901.03 = 15,442.40/x
  3. Step 3: Cross multiply
    28,189.23x = 38,901.03 × 15,442.40
  4. Step 4: Simplify right side
    28,189.23x = 600,725,137.14
  5. Step 5: Solve for x
    x = 600,725,137.14/28,189.23
  6. Step 6: Final answer
    x = 21,310.45

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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.