Home / 27,982.20-42,005.70-16,901.40

Finding the Fourth Proportional to 27,982.20, 42,005.70 and 16,901.40

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Solution

The fourth proportional to 27,982.20, 42,005.70 and 16,901.40 is: 25,371.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,982.20 : 42,005.70 = 16,901.40 : x
  2. Step 2: Convert to fraction form
    27,982.20/42,005.70 = 16,901.40/x
  3. Step 3: Cross multiply
    27,982.20x = 42,005.70 × 16,901.40
  4. Step 4: Simplify right side
    27,982.20x = 709,955,137.98
  5. Step 5: Solve for x
    x = 709,955,137.98/27,982.20
  6. Step 6: Final answer
    x = 25,371.67

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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.