Home / 21,977.73-30,328.56-12,417.98

Finding the Fourth Proportional to 21,977.73, 30,328.56 and 12,417.98

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Solution

The fourth proportional to 21,977.73, 30,328.56 and 12,417.98 is: 17,136.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.73 : 30,328.56 = 12,417.98 : x
  2. Step 2: Convert to fraction form
    21,977.73/30,328.56 = 12,417.98/x
  3. Step 3: Cross multiply
    21,977.73x = 30,328.56 × 12,417.98
  4. Step 4: Simplify right side
    21,977.73x = 376,619,299.87
  5. Step 5: Solve for x
    x = 376,619,299.87/21,977.73
  6. Step 6: Final answer
    x = 17,136.41

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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.