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Finding the Fourth Proportional to 19,299.80, 28,955.16 and 9,946.64

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Solution

The fourth proportional to 19,299.80, 28,955.16 and 9,946.64 is: 14,922.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,299.80 : 28,955.16 = 9,946.64 : x
  2. Step 2: Convert to fraction form
    19,299.80/28,955.16 = 9,946.64/x
  3. Step 3: Cross multiply
    19,299.80x = 28,955.16 × 9,946.64
  4. Step 4: Simplify right side
    19,299.80x = 288,006,407.89
  5. Step 5: Solve for x
    x = 288,006,407.89/19,299.80
  6. Step 6: Final answer
    x = 14,922.77

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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.