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Finding the Fourth Proportional to 18,303.86, 25,240.46 and 15,660.02

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Solution

The fourth proportional to 18,303.86, 25,240.46 and 15,660.02 is: 21,594.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.86 : 25,240.46 = 15,660.02 : x
  2. Step 2: Convert to fraction form
    18,303.86/25,240.46 = 15,660.02/x
  3. Step 3: Cross multiply
    18,303.86x = 25,240.46 × 15,660.02
  4. Step 4: Simplify right side
    18,303.86x = 395,266,108.41
  5. Step 5: Solve for x
    x = 395,266,108.41/18,303.86
  6. Step 6: Final answer
    x = 21,594.69

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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.