Home / 21,150.84-29,184.30-12,764.28

Finding the Fourth Proportional to 21,150.84, 29,184.30 and 12,764.28

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Solution

The fourth proportional to 21,150.84, 29,184.30 and 12,764.28 is: 17,612.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.84 : 29,184.30 = 12,764.28 : x
  2. Step 2: Convert to fraction form
    21,150.84/29,184.30 = 12,764.28/x
  3. Step 3: Cross multiply
    21,150.84x = 29,184.30 × 12,764.28
  4. Step 4: Simplify right side
    21,150.84x = 372,516,576.80
  5. Step 5: Solve for x
    x = 372,516,576.80/21,150.84
  6. Step 6: Final answer
    x = 17,612.38

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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.