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Finding the Fourth Proportional to 18,816.71, 25,957.26 and 11,259.41

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Solution

The fourth proportional to 18,816.71, 25,957.26 and 11,259.41 is: 15,532.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.71 : 25,957.26 = 11,259.41 : x
  2. Step 2: Convert to fraction form
    18,816.71/25,957.26 = 11,259.41/x
  3. Step 3: Cross multiply
    18,816.71x = 25,957.26 × 11,259.41
  4. Step 4: Simplify right side
    18,816.71x = 292,263,303.03
  5. Step 5: Solve for x
    x = 292,263,303.03/18,816.71
  6. Step 6: Final answer
    x = 15,532.12

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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.