Home / 19,820.12-29,730.22-6,681.71

Finding the Fourth Proportional to 19,820.12, 29,730.22 and 6,681.71

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Solution

The fourth proportional to 19,820.12, 29,730.22 and 6,681.71 is: 10,022.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.12 : 29,730.22 = 6,681.71 : x
  2. Step 2: Convert to fraction form
    19,820.12/29,730.22 = 6,681.71/x
  3. Step 3: Cross multiply
    19,820.12x = 29,730.22 × 6,681.71
  4. Step 4: Simplify right side
    19,820.12x = 198,648,765.90
  5. Step 5: Solve for x
    x = 198,648,765.90/19,820.12
  6. Step 6: Final answer
    x = 10,022.58

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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.