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Finding the Fourth Proportional to 30,307.91, 45,460.79 and 9,247.10

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Solution

The fourth proportional to 30,307.91, 45,460.79 and 9,247.10 is: 13,870.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,307.91 : 45,460.79 = 9,247.10 : x
  2. Step 2: Convert to fraction form
    30,307.91/45,460.79 = 9,247.10/x
  3. Step 3: Cross multiply
    30,307.91x = 45,460.79 × 9,247.10
  4. Step 4: Simplify right side
    30,307.91x = 420,380,471.21
  5. Step 5: Solve for x
    x = 420,380,471.21/30,307.91
  6. Step 6: Final answer
    x = 13,870.32

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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.