Home / 21,278.88-29,363.04-11,848.32

Finding the Fourth Proportional to 21,278.88, 29,363.04 and 11,848.32

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Solution

The fourth proportional to 21,278.88, 29,363.04 and 11,848.32 is: 16,349.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.88 : 29,363.04 = 11,848.32 : x
  2. Step 2: Convert to fraction form
    21,278.88/29,363.04 = 11,848.32/x
  3. Step 3: Cross multiply
    21,278.88x = 29,363.04 × 11,848.32
  4. Step 4: Simplify right side
    21,278.88x = 347,902,694.09
  5. Step 5: Solve for x
    x = 347,902,694.09/21,278.88
  6. Step 6: Final answer
    x = 16,349.67

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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.