Home / 20,451.60-30,681.50-7,303.64

Finding the Fourth Proportional to 20,451.60, 30,681.50 and 7,303.64

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Solution

The fourth proportional to 20,451.60, 30,681.50 and 7,303.64 is: 10,956.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.60 : 30,681.50 = 7,303.64 : x
  2. Step 2: Convert to fraction form
    20,451.60/30,681.50 = 7,303.64/x
  3. Step 3: Cross multiply
    20,451.60x = 30,681.50 × 7,303.64
  4. Step 4: Simplify right side
    20,451.60x = 224,086,630.66
  5. Step 5: Solve for x
    x = 224,086,630.66/20,451.60
  6. Step 6: Final answer
    x = 10,956.92

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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.