Home / 21,894.04-30,202.95-12,937.21

Finding the Fourth Proportional to 21,894.04, 30,202.95 and 12,937.21

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Solution

The fourth proportional to 21,894.04, 30,202.95 and 12,937.21 is: 17,846.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,894.04 : 30,202.95 = 12,937.21 : x
  2. Step 2: Convert to fraction form
    21,894.04/30,202.95 = 12,937.21/x
  3. Step 3: Cross multiply
    21,894.04x = 30,202.95 × 12,937.21
  4. Step 4: Simplify right side
    21,894.04x = 390,741,906.77
  5. Step 5: Solve for x
    x = 390,741,906.77/21,894.04
  6. Step 6: Final answer
    x = 17,846.95

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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.