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Finding the Fourth Proportional to 20,497.40, 30,746.10 and 18,529.10

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Solution

The fourth proportional to 20,497.40, 30,746.10 and 18,529.10 is: 27,793.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.40 : 30,746.10 = 18,529.10 : x
  2. Step 2: Convert to fraction form
    20,497.40/30,746.10 = 18,529.10/x
  3. Step 3: Cross multiply
    20,497.40x = 30,746.10 × 18,529.10
  4. Step 4: Simplify right side
    20,497.40x = 569,697,561.51
  5. Step 5: Solve for x
    x = 569,697,561.51/20,497.40
  6. Step 6: Final answer
    x = 27,793.65

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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.