Home / 21,278.08-29,362.80-11,846.08

Finding the Fourth Proportional to 21,278.08, 29,362.80 and 11,846.08

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Solution

The fourth proportional to 21,278.08, 29,362.80 and 11,846.08 is: 16,347.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.08 : 29,362.80 = 11,846.08 : x
  2. Step 2: Convert to fraction form
    21,278.08/29,362.80 = 11,846.08/x
  3. Step 3: Cross multiply
    21,278.08x = 29,362.80 × 11,846.08
  4. Step 4: Simplify right side
    21,278.08x = 347,834,077.82
  5. Step 5: Solve for x
    x = 347,834,077.82/21,278.08
  6. Step 6: Final answer
    x = 16,347.06

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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.