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Finding the Fourth Proportional to 30,330.59, 45,504.92 and 21,916.11

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Solution

The fourth proportional to 30,330.59, 45,504.92 and 21,916.11 is: 32,880.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,330.59 : 45,504.92 = 21,916.11 : x
  2. Step 2: Convert to fraction form
    30,330.59/45,504.92 = 21,916.11/x
  3. Step 3: Cross multiply
    30,330.59x = 45,504.92 × 21,916.11
  4. Step 4: Simplify right side
    30,330.59x = 997,290,832.26
  5. Step 5: Solve for x
    x = 997,290,832.26/30,330.59
  6. Step 6: Final answer
    x = 32,880.69

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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.