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Finding the Fourth Proportional to 19,260.70, 28,900.65 and 10,947.10

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Solution

The fourth proportional to 19,260.70, 28,900.65 and 10,947.10 is: 16,426.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,260.70 : 28,900.65 = 10,947.10 : x
  2. Step 2: Convert to fraction form
    19,260.70/28,900.65 = 10,947.10/x
  3. Step 3: Cross multiply
    19,260.70x = 28,900.65 × 10,947.10
  4. Step 4: Simplify right side
    19,260.70x = 316,378,305.62
  5. Step 5: Solve for x
    x = 316,378,305.62/19,260.70
  6. Step 6: Final answer
    x = 16,426.11

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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.