Home / 28,145.23-38,840.26-15,398.18

Finding the Fourth Proportional to 28,145.23, 38,840.26 and 15,398.18

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Solution

The fourth proportional to 28,145.23, 38,840.26 and 15,398.18 is: 21,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.23 : 38,840.26 = 15,398.18 : x
  2. Step 2: Convert to fraction form
    28,145.23/38,840.26 = 15,398.18/x
  3. Step 3: Cross multiply
    28,145.23x = 38,840.26 × 15,398.18
  4. Step 4: Simplify right side
    28,145.23x = 598,069,147.31
  5. Step 5: Solve for x
    x = 598,069,147.31/28,145.23
  6. Step 6: Final answer
    x = 21,249.40

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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.