Home / 21,257.77-29,376.19-15,943.36

Finding the Fourth Proportional to 21,257.77, 29,376.19 and 15,943.36

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Solution

The fourth proportional to 21,257.77, 29,376.19 and 15,943.36 is: 22,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.77 : 29,376.19 = 15,943.36 : x
  2. Step 2: Convert to fraction form
    21,257.77/29,376.19 = 15,943.36/x
  3. Step 3: Cross multiply
    21,257.77x = 29,376.19 × 15,943.36
  4. Step 4: Simplify right side
    21,257.77x = 468,355,166.32
  5. Step 5: Solve for x
    x = 468,355,166.32/21,257.77
  6. Step 6: Final answer
    x = 22,032.18

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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.