Home / 19,311-28,977.45-10,426.21

Finding the Fourth Proportional to 19,311, 28,977.45 and 10,426.21

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Solution

The fourth proportional to 19,311, 28,977.45 and 10,426.21 is: 15,645.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311 : 28,977.45 = 10,426.21 : x
  2. Step 2: Convert to fraction form
    19,311/28,977.45 = 10,426.21/x
  3. Step 3: Cross multiply
    19,311x = 28,977.45 × 10,426.21
  4. Step 4: Simplify right side
    19,311x = 302,124,978.96
  5. Step 5: Solve for x
    x = 302,124,978.96/19,311
  6. Step 6: Final answer
    x = 15,645.23

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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.