Home / 21,977.43-30,325.10-12,412.95

Finding the Fourth Proportional to 21,977.43, 30,325.10 and 12,412.95

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Solution

The fourth proportional to 21,977.43, 30,325.10 and 12,412.95 is: 17,127.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.43 : 30,325.10 = 12,412.95 : x
  2. Step 2: Convert to fraction form
    21,977.43/30,325.10 = 12,412.95/x
  3. Step 3: Cross multiply
    21,977.43x = 30,325.10 × 12,412.95
  4. Step 4: Simplify right side
    21,977.43x = 376,423,887.98
  5. Step 5: Solve for x
    x = 376,423,887.98/21,977.43
  6. Step 6: Final answer
    x = 17,127.75

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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.