Home / 21,376.62-29,472.74-13,810.14

Finding the Fourth Proportional to 21,376.62, 29,472.74 and 13,810.14

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Solution

The fourth proportional to 21,376.62, 29,472.74 and 13,810.14 is: 19,040.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.62 : 29,472.74 = 13,810.14 : x
  2. Step 2: Convert to fraction form
    21,376.62/29,472.74 = 13,810.14/x
  3. Step 3: Cross multiply
    21,376.62x = 29,472.74 × 13,810.14
  4. Step 4: Simplify right side
    21,376.62x = 407,022,665.58
  5. Step 5: Solve for x
    x = 407,022,665.58/21,376.62
  6. Step 6: Final answer
    x = 19,040.55

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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.