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Finding the Fourth Proportional to 18,257.93, 25,173.11 and 15,237.40

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Solution

The fourth proportional to 18,257.93, 25,173.11 and 15,237.40 is: 21,008.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,257.93 : 25,173.11 = 15,237.40 : x
  2. Step 2: Convert to fraction form
    18,257.93/25,173.11 = 15,237.40/x
  3. Step 3: Cross multiply
    18,257.93x = 25,173.11 × 15,237.40
  4. Step 4: Simplify right side
    18,257.93x = 383,572,746.31
  5. Step 5: Solve for x
    x = 383,572,746.31/18,257.93
  6. Step 6: Final answer
    x = 21,008.56

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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.