Home / 20,947.90-31,384.95-11,065.41

Finding the Fourth Proportional to 20,947.90, 31,384.95 and 11,065.41

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Solution

The fourth proportional to 20,947.90, 31,384.95 and 11,065.41 is: 16,578.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.90 : 31,384.95 = 11,065.41 : x
  2. Step 2: Convert to fraction form
    20,947.90/31,384.95 = 11,065.41/x
  3. Step 3: Cross multiply
    20,947.90x = 31,384.95 × 11,065.41
  4. Step 4: Simplify right side
    20,947.90x = 347,287,339.58
  5. Step 5: Solve for x
    x = 347,287,339.58/20,947.90
  6. Step 6: Final answer
    x = 16,578.62

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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.