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Finding the Fourth Proportional to 19,296.42, 28,891.38 and 9,916.20

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Solution

The fourth proportional to 19,296.42, 28,891.38 and 9,916.20 is: 14,846.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,296.42 : 28,891.38 = 9,916.20 : x
  2. Step 2: Convert to fraction form
    19,296.42/28,891.38 = 9,916.20/x
  3. Step 3: Cross multiply
    19,296.42x = 28,891.38 × 9,916.20
  4. Step 4: Simplify right side
    19,296.42x = 286,492,702.36
  5. Step 5: Solve for x
    x = 286,492,702.36/19,296.42
  6. Step 6: Final answer
    x = 14,846.94

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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.