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Finding the Fourth Proportional to 20,030.69, 29,969.69 and 12,433.16

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Solution

The fourth proportional to 20,030.69, 29,969.69 and 12,433.16 is: 18,602.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.69 : 29,969.69 = 12,433.16 : x
  2. Step 2: Convert to fraction form
    20,030.69/29,969.69 = 12,433.16/x
  3. Step 3: Cross multiply
    20,030.69x = 29,969.69 × 12,433.16
  4. Step 4: Simplify right side
    20,030.69x = 372,617,738.91
  5. Step 5: Solve for x
    x = 372,617,738.91/20,030.69
  6. Step 6: Final answer
    x = 18,602.35

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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.