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Finding the Fourth Proportional to 30,287.66, 45,440.49 and 13,652.78

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Solution

The fourth proportional to 30,287.66, 45,440.49 and 13,652.78 is: 20,483.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.66 : 45,440.49 = 13,652.78 : x
  2. Step 2: Convert to fraction form
    30,287.66/45,440.49 = 13,652.78/x
  3. Step 3: Cross multiply
    30,287.66x = 45,440.49 × 13,652.78
  4. Step 4: Simplify right side
    30,287.66x = 620,389,013.06
  5. Step 5: Solve for x
    x = 620,389,013.06/30,287.66
  6. Step 6: Final answer
    x = 20,483.23

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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.