Home / 19,920.59-29,899.34-10,066.80

Finding the Fourth Proportional to 19,920.59, 29,899.34 and 10,066.80

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Solution

The fourth proportional to 19,920.59, 29,899.34 and 10,066.80 is: 15,109.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.59 : 29,899.34 = 10,066.80 : x
  2. Step 2: Convert to fraction form
    19,920.59/29,899.34 = 10,066.80/x
  3. Step 3: Cross multiply
    19,920.59x = 29,899.34 × 10,066.80
  4. Step 4: Simplify right side
    19,920.59x = 300,990,701.08
  5. Step 5: Solve for x
    x = 300,990,701.08/19,920.59
  6. Step 6: Final answer
    x = 15,109.53

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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.