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Finding the Fourth Proportional to 19,204.70, 28,807.05 and 15,316.70

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Solution

The fourth proportional to 19,204.70, 28,807.05 and 15,316.70 is: 22,975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,204.70 : 28,807.05 = 15,316.70 : x
  2. Step 2: Convert to fraction form
    19,204.70/28,807.05 = 15,316.70/x
  3. Step 3: Cross multiply
    19,204.70x = 28,807.05 × 15,316.70
  4. Step 4: Simplify right side
    19,204.70x = 441,228,942.74
  5. Step 5: Solve for x
    x = 441,228,942.74/19,204.70
  6. Step 6: Final answer
    x = 22,975.05

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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.