Home / 21,787.90-29,993.61-19,549.06

Finding the Fourth Proportional to 21,787.90, 29,993.61 and 19,549.06

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Solution

The fourth proportional to 21,787.90, 29,993.61 and 19,549.06 is: 26,911.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.90 : 29,993.61 = 19,549.06 : x
  2. Step 2: Convert to fraction form
    21,787.90/29,993.61 = 19,549.06/x
  3. Step 3: Cross multiply
    21,787.90x = 29,993.61 × 19,549.06
  4. Step 4: Simplify right side
    21,787.90x = 586,346,881.51
  5. Step 5: Solve for x
    x = 586,346,881.51/21,787.90
  6. Step 6: Final answer
    x = 26,911.58

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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.