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Finding the Fourth Proportional to 19,269.72, 28,908.48 and 10,953.72

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Solution

The fourth proportional to 19,269.72, 28,908.48 and 10,953.72 is: 16,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,269.72 : 28,908.48 = 10,953.72 : x
  2. Step 2: Convert to fraction form
    19,269.72/28,908.48 = 10,953.72/x
  3. Step 3: Cross multiply
    19,269.72x = 28,908.48 × 10,953.72
  4. Step 4: Simplify right side
    19,269.72x = 316,655,395.55
  5. Step 5: Solve for x
    x = 316,655,395.55/19,269.72
  6. Step 6: Final answer
    x = 16,432.80

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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.