Home / 18,685.74-28,060.35-12,485.59

Finding the Fourth Proportional to 18,685.74, 28,060.35 and 12,485.59

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Solution

The fourth proportional to 18,685.74, 28,060.35 and 12,485.59 is: 18,749.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.74 : 28,060.35 = 12,485.59 : x
  2. Step 2: Convert to fraction form
    18,685.74/28,060.35 = 12,485.59/x
  3. Step 3: Cross multiply
    18,685.74x = 28,060.35 × 12,485.59
  4. Step 4: Simplify right side
    18,685.74x = 350,350,025.36
  5. Step 5: Solve for x
    x = 350,350,025.36/18,685.74
  6. Step 6: Final answer
    x = 18,749.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.