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Finding the Fourth Proportional to 21,894.29, 30,210.03 and 12,333.45

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Solution

The fourth proportional to 21,894.29, 30,210.03 and 12,333.45 is: 17,017.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,894.29 : 30,210.03 = 12,333.45 : x
  2. Step 2: Convert to fraction form
    21,894.29/30,210.03 = 12,333.45/x
  3. Step 3: Cross multiply
    21,894.29x = 30,210.03 × 12,333.45
  4. Step 4: Simplify right side
    21,894.29x = 372,593,894.50
  5. Step 5: Solve for x
    x = 372,593,894.50/21,894.29
  6. Step 6: Final answer
    x = 17,017.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.