Home / 20,271.60-30,400.02-7,785.18

Finding the Fourth Proportional to 20,271.60, 30,400.02 and 7,785.18

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Solution

The fourth proportional to 20,271.60, 30,400.02 and 7,785.18 is: 11,674.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.60 : 30,400.02 = 7,785.18 : x
  2. Step 2: Convert to fraction form
    20,271.60/30,400.02 = 7,785.18/x
  3. Step 3: Cross multiply
    20,271.60x = 30,400.02 × 7,785.18
  4. Step 4: Simplify right side
    20,271.60x = 236,669,627.70
  5. Step 5: Solve for x
    x = 236,669,627.70/20,271.60
  6. Step 6: Final answer
    x = 11,674.94

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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.