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Finding the Fourth Proportional to 25,810, 38,688.86 and 17,490.86

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Solution

The fourth proportional to 25,810, 38,688.86 and 17,490.86 is: 26,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,810 : 38,688.86 = 17,490.86 : x
  2. Step 2: Convert to fraction form
    25,810/38,688.86 = 17,490.86/x
  3. Step 3: Cross multiply
    25,810x = 38,688.86 × 17,490.86
  4. Step 4: Simplify right side
    25,810x = 676,701,346.37
  5. Step 5: Solve for x
    x = 676,701,346.37/25,810
  6. Step 6: Final answer
    x = 26,218.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.