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Finding the Fourth Proportional to 25,443, 35,111.52 and 15,507

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Solution

The fourth proportional to 25,443, 35,111.52 and 15,507 is: 21,399.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,443 : 35,111.52 = 15,507 : x
  2. Step 2: Convert to fraction form
    25,443/35,111.52 = 15,507/x
  3. Step 3: Cross multiply
    25,443x = 35,111.52 × 15,507
  4. Step 4: Simplify right side
    25,443x = 544,474,340.64
  5. Step 5: Solve for x
    x = 544,474,340.64/25,443
  6. Step 6: Final answer
    x = 21,399.77

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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.