Home / 20,303.84-30,428.40-8,613.92

Finding the Fourth Proportional to 20,303.84, 30,428.40 and 8,613.92

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Solution

The fourth proportional to 20,303.84, 30,428.40 and 8,613.92 is: 12,909.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.84 : 30,428.40 = 8,613.92 : x
  2. Step 2: Convert to fraction form
    20,303.84/30,428.40 = 8,613.92/x
  3. Step 3: Cross multiply
    20,303.84x = 30,428.40 × 8,613.92
  4. Step 4: Simplify right side
    20,303.84x = 262,107,803.33
  5. Step 5: Solve for x
    x = 262,107,803.33/20,303.84
  6. Step 6: Final answer
    x = 12,909.27

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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.