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Finding the Fourth Proportional to 20,437.74, 30,477.76 and 20,250.90

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Solution

The fourth proportional to 20,437.74, 30,477.76 and 20,250.90 is: 30,199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.74 : 30,477.76 = 20,250.90 : x
  2. Step 2: Convert to fraction form
    20,437.74/30,477.76 = 20,250.90/x
  3. Step 3: Cross multiply
    20,437.74x = 30,477.76 × 20,250.90
  4. Step 4: Simplify right side
    20,437.74x = 617,202,019.36
  5. Step 5: Solve for x
    x = 617,202,019.36/20,437.74
  6. Step 6: Final answer
    x = 30,199.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.