Home / 21,219.57-29,283.66-12,266.28

Finding the Fourth Proportional to 21,219.57, 29,283.66 and 12,266.28

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Solution

The fourth proportional to 21,219.57, 29,283.66 and 12,266.28 is: 16,927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.57 : 29,283.66 = 12,266.28 : x
  2. Step 2: Convert to fraction form
    21,219.57/29,283.66 = 12,266.28/x
  3. Step 3: Cross multiply
    21,219.57x = 29,283.66 × 12,266.28
  4. Step 4: Simplify right side
    21,219.57x = 359,201,572.98
  5. Step 5: Solve for x
    x = 359,201,572.98/21,219.57
  6. Step 6: Final answer
    x = 16,927.84

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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.