Home / 19,289.40-28,998.90-16,438.20

Finding the Fourth Proportional to 19,289.40, 28,998.90 and 16,438.20

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Solution

The fourth proportional to 19,289.40, 28,998.90 and 16,438.20 is: 24,712.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289.40 : 28,998.90 = 16,438.20 : x
  2. Step 2: Convert to fraction form
    19,289.40/28,998.90 = 16,438.20/x
  3. Step 3: Cross multiply
    19,289.40x = 28,998.90 × 16,438.20
  4. Step 4: Simplify right side
    19,289.40x = 476,689,717.98
  5. Step 5: Solve for x
    x = 476,689,717.98/19,289.40
  6. Step 6: Final answer
    x = 24,712.52

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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.