Home / 19,789.68-29,681.40-6,642.18

Finding the Fourth Proportional to 19,789.68, 29,681.40 and 6,642.18

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Solution

The fourth proportional to 19,789.68, 29,681.40 and 6,642.18 is: 9,962.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,789.68 : 29,681.40 = 6,642.18 : x
  2. Step 2: Convert to fraction form
    19,789.68/29,681.40 = 6,642.18/x
  3. Step 3: Cross multiply
    19,789.68x = 29,681.40 × 6,642.18
  4. Step 4: Simplify right side
    19,789.68x = 197,149,201.45
  5. Step 5: Solve for x
    x = 197,149,201.45/19,789.68
  6. Step 6: Final answer
    x = 9,962.22

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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.