Home / 19,421.69-29,144.07-18,191.70

Finding the Fourth Proportional to 19,421.69, 29,144.07 and 18,191.70

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Solution

The fourth proportional to 19,421.69, 29,144.07 and 18,191.70 is: 27,298.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.69 : 29,144.07 = 18,191.70 : x
  2. Step 2: Convert to fraction form
    19,421.69/29,144.07 = 18,191.70/x
  3. Step 3: Cross multiply
    19,421.69x = 29,144.07 × 18,191.70
  4. Step 4: Simplify right side
    19,421.69x = 530,180,178.22
  5. Step 5: Solve for x
    x = 530,180,178.22/19,421.69
  6. Step 6: Final answer
    x = 27,298.36

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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.