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Finding the Fourth Proportional to 25,378.78, 35,022.80 and 13,737.00

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Solution

The fourth proportional to 25,378.78, 35,022.80 and 13,737.00 is: 18,957.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,378.78 : 35,022.80 = 13,737.00 : x
  2. Step 2: Convert to fraction form
    25,378.78/35,022.80 = 13,737.00/x
  3. Step 3: Cross multiply
    25,378.78x = 35,022.80 × 13,737.00
  4. Step 4: Simplify right side
    25,378.78x = 481,108,080.85
  5. Step 5: Solve for x
    x = 481,108,080.85/25,378.78
  6. Step 6: Final answer
    x = 18,957.10

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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.