Home / 19,320.29-28,991.20-10,435.44

Finding the Fourth Proportional to 19,320.29, 28,991.20 and 10,435.44

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Solution

The fourth proportional to 19,320.29, 28,991.20 and 10,435.44 is: 15,658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.29 : 28,991.20 = 10,435.44 : x
  2. Step 2: Convert to fraction form
    19,320.29/28,991.20 = 10,435.44/x
  3. Step 3: Cross multiply
    19,320.29x = 28,991.20 × 10,435.44
  4. Step 4: Simplify right side
    19,320.29x = 302,535,730.99
  5. Step 5: Solve for x
    x = 302,535,730.99/19,320.29
  6. Step 6: Final answer
    x = 15,658.97

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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.