Home / 19,320.15-28,991.12-10,435.37

Finding the Fourth Proportional to 19,320.15, 28,991.12 and 10,435.37

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Solution

The fourth proportional to 19,320.15, 28,991.12 and 10,435.37 is: 15,658.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.15 : 28,991.12 = 10,435.37 : x
  2. Step 2: Convert to fraction form
    19,320.15/28,991.12 = 10,435.37/x
  3. Step 3: Cross multiply
    19,320.15x = 28,991.12 × 10,435.37
  4. Step 4: Simplify right side
    19,320.15x = 302,532,866.78
  5. Step 5: Solve for x
    x = 302,532,866.78/19,320.15
  6. Step 6: Final answer
    x = 15,658.93

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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.