Home / 21,983.52-30,339.92-12,423.81

Finding the Fourth Proportional to 21,983.52, 30,339.92 and 12,423.81

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Solution

The fourth proportional to 21,983.52, 30,339.92 and 12,423.81 is: 17,146.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.52 : 30,339.92 = 12,423.81 : x
  2. Step 2: Convert to fraction form
    21,983.52/30,339.92 = 12,423.81/x
  3. Step 3: Cross multiply
    21,983.52x = 30,339.92 × 12,423.81
  4. Step 4: Simplify right side
    21,983.52x = 376,937,432.55
  5. Step 5: Solve for x
    x = 376,937,432.55/21,983.52
  6. Step 6: Final answer
    x = 17,146.36

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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.