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Finding the Fourth Proportional to 20,598.70, 30,898.05 and 10,230.70

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Solution

The fourth proportional to 20,598.70, 30,898.05 and 10,230.70 is: 15,346.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,598.70 : 30,898.05 = 10,230.70 : x
  2. Step 2: Convert to fraction form
    20,598.70/30,898.05 = 10,230.70/x
  3. Step 3: Cross multiply
    20,598.70x = 30,898.05 × 10,230.70
  4. Step 4: Simplify right side
    20,598.70x = 316,108,680.14
  5. Step 5: Solve for x
    x = 316,108,680.14/20,598.70
  6. Step 6: Final answer
    x = 15,346.05

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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.