Home / 27,723.60-38,259.36-15,787.08

Finding the Fourth Proportional to 27,723.60, 38,259.36 and 15,787.08

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Solution

The fourth proportional to 27,723.60, 38,259.36 and 15,787.08 is: 21,786.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,723.60 : 38,259.36 = 15,787.08 : x
  2. Step 2: Convert to fraction form
    27,723.60/38,259.36 = 15,787.08/x
  3. Step 3: Cross multiply
    27,723.60x = 38,259.36 × 15,787.08
  4. Step 4: Simplify right side
    27,723.60x = 604,003,577.07
  5. Step 5: Solve for x
    x = 604,003,577.07/27,723.60
  6. Step 6: Final answer
    x = 21,786.62

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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.