Home / 27,723.88-38,254.53-15,787.45

Finding the Fourth Proportional to 27,723.88, 38,254.53 and 15,787.45

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Solution

The fourth proportional to 27,723.88, 38,254.53 and 15,787.45 is: 21,784.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,723.88 : 38,254.53 = 15,787.45 : x
  2. Step 2: Convert to fraction form
    27,723.88/38,254.53 = 15,787.45/x
  3. Step 3: Cross multiply
    27,723.88x = 38,254.53 × 15,787.45
  4. Step 4: Simplify right side
    27,723.88x = 603,941,479.65
  5. Step 5: Solve for x
    x = 603,941,479.65/27,723.88
  6. Step 6: Final answer
    x = 21,784.16

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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.