Home / 12,562.09-18,820.96-7,621.70

Finding the Fourth Proportional to 12,562.09, 18,820.96 and 7,621.70

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Solution

The fourth proportional to 12,562.09, 18,820.96 and 7,621.70 is: 11,419.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,562.09 : 18,820.96 = 7,621.70 : x
  2. Step 2: Convert to fraction form
    12,562.09/18,820.96 = 7,621.70/x
  3. Step 3: Cross multiply
    12,562.09x = 18,820.96 × 7,621.70
  4. Step 4: Simplify right side
    12,562.09x = 143,447,597.67
  5. Step 5: Solve for x
    x = 143,447,597.67/12,562.09
  6. Step 6: Final answer
    x = 11,419.09

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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.