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Finding the Fourth Proportional to 19,270.72, 28,909.98 and 10,954.72

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Solution

The fourth proportional to 19,270.72, 28,909.98 and 10,954.72 is: 16,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,270.72 : 28,909.98 = 10,954.72 : x
  2. Step 2: Convert to fraction form
    19,270.72/28,909.98 = 10,954.72/x
  3. Step 3: Cross multiply
    19,270.72x = 28,909.98 × 10,954.72
  4. Step 4: Simplify right side
    19,270.72x = 316,700,736.11
  5. Step 5: Solve for x
    x = 316,700,736.11/19,270.72
  6. Step 6: Final answer
    x = 16,434.30

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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.