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Finding the Fourth Proportional to 25,416.59, 35,053.05 and 15,342.72

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Solution

The fourth proportional to 25,416.59, 35,053.05 and 15,342.72 is: 21,159.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,416.59 : 35,053.05 = 15,342.72 : x
  2. Step 2: Convert to fraction form
    25,416.59/35,053.05 = 15,342.72/x
  3. Step 3: Cross multiply
    25,416.59x = 35,053.05 × 15,342.72
  4. Step 4: Simplify right side
    25,416.59x = 537,809,057.38
  5. Step 5: Solve for x
    x = 537,809,057.38/25,416.59
  6. Step 6: Final answer
    x = 21,159.77

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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.