Home / 21,827.49-30,114.03-14,278.12

Finding the Fourth Proportional to 21,827.49, 30,114.03 and 14,278.12

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Solution

The fourth proportional to 21,827.49, 30,114.03 and 14,278.12 is: 19,698.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.49 : 30,114.03 = 14,278.12 : x
  2. Step 2: Convert to fraction form
    21,827.49/30,114.03 = 14,278.12/x
  3. Step 3: Cross multiply
    21,827.49x = 30,114.03 × 14,278.12
  4. Step 4: Simplify right side
    21,827.49x = 429,971,734.02
  5. Step 5: Solve for x
    x = 429,971,734.02/21,827.49
  6. Step 6: Final answer
    x = 19,698.63

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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.