Home / 21,298.47-29,392.08-11,738.70

Finding the Fourth Proportional to 21,298.47, 29,392.08 and 11,738.70

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Solution

The fourth proportional to 21,298.47, 29,392.08 and 11,738.70 is: 16,199.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.47 : 29,392.08 = 11,738.70 : x
  2. Step 2: Convert to fraction form
    21,298.47/29,392.08 = 11,738.70/x
  3. Step 3: Cross multiply
    21,298.47x = 29,392.08 × 11,738.70
  4. Step 4: Simplify right side
    21,298.47x = 345,024,743.30
  5. Step 5: Solve for x
    x = 345,024,743.30/21,298.47
  6. Step 6: Final answer
    x = 16,199.51

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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.