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Finding the Fourth Proportional to 30,597.30, 45,867.78 and 11,889.78

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Solution

The fourth proportional to 30,597.30, 45,867.78 and 11,889.78 is: 17,823.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,597.30 : 45,867.78 = 11,889.78 : x
  2. Step 2: Convert to fraction form
    30,597.30/45,867.78 = 11,889.78/x
  3. Step 3: Cross multiply
    30,597.30x = 45,867.78 × 11,889.78
  4. Step 4: Simplify right side
    30,597.30x = 545,357,813.29
  5. Step 5: Solve for x
    x = 545,357,813.29/30,597.30
  6. Step 6: Final answer
    x = 17,823.72

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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.