Home / 20,496.24-30,666.60-12,685.68

Finding the Fourth Proportional to 20,496.24, 30,666.60 and 12,685.68

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Solution

The fourth proportional to 20,496.24, 30,666.60 and 12,685.68 is: 18,980.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,496.24 : 30,666.60 = 12,685.68 : x
  2. Step 2: Convert to fraction form
    20,496.24/30,666.60 = 12,685.68/x
  3. Step 3: Cross multiply
    20,496.24x = 30,666.60 × 12,685.68
  4. Step 4: Simplify right side
    20,496.24x = 389,026,674.29
  5. Step 5: Solve for x
    x = 389,026,674.29/20,496.24
  6. Step 6: Final answer
    x = 18,980.39

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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.