Home / 21,864.92-30,170.88-12,303.63

Finding the Fourth Proportional to 21,864.92, 30,170.88 and 12,303.63

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Solution

The fourth proportional to 21,864.92, 30,170.88 and 12,303.63 is: 16,977.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.92 : 30,170.88 = 12,303.63 : x
  2. Step 2: Convert to fraction form
    21,864.92/30,170.88 = 12,303.63/x
  3. Step 3: Cross multiply
    21,864.92x = 30,170.88 × 12,303.63
  4. Step 4: Simplify right side
    21,864.92x = 371,211,344.29
  5. Step 5: Solve for x
    x = 371,211,344.29/21,864.92
  6. Step 6: Final answer
    x = 16,977.49

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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.