Home / 22,289.50-33,390.91-12,398.79

Finding the Fourth Proportional to 22,289.50, 33,390.91 and 12,398.79

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Solution

The fourth proportional to 22,289.50, 33,390.91 and 12,398.79 is: 18,574.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,289.50 : 33,390.91 = 12,398.79 : x
  2. Step 2: Convert to fraction form
    22,289.50/33,390.91 = 12,398.79/x
  3. Step 3: Cross multiply
    22,289.50x = 33,390.91 × 12,398.79
  4. Step 4: Simplify right side
    22,289.50x = 414,006,881.00
  5. Step 5: Solve for x
    x = 414,006,881.00/22,289.50
  6. Step 6: Final answer
    x = 18,574.08

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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.