Home / 21,278.84-29,364.75-11,849.63

Finding the Fourth Proportional to 21,278.84, 29,364.75 and 11,849.63

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Solution

The fourth proportional to 21,278.84, 29,364.75 and 11,849.63 is: 16,352.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.84 : 29,364.75 = 11,849.63 : x
  2. Step 2: Convert to fraction form
    21,278.84/29,364.75 = 11,849.63/x
  3. Step 3: Cross multiply
    21,278.84x = 29,364.75 × 11,849.63
  4. Step 4: Simplify right side
    21,278.84x = 347,961,275.72
  5. Step 5: Solve for x
    x = 347,961,275.72/21,278.84
  6. Step 6: Final answer
    x = 16,352.46

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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.