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Finding the Fourth Proportional to 19,299.40, 28,934.28 and 9,803.92

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Solution

The fourth proportional to 19,299.40, 28,934.28 and 9,803.92 is: 14,698.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,299.40 : 28,934.28 = 9,803.92 : x
  2. Step 2: Convert to fraction form
    19,299.40/28,934.28 = 9,803.92/x
  3. Step 3: Cross multiply
    19,299.40x = 28,934.28 × 9,803.92
  4. Step 4: Simplify right side
    19,299.40x = 283,669,366.38
  5. Step 5: Solve for x
    x = 283,669,366.38/19,299.40
  6. Step 6: Final answer
    x = 14,698.35

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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.