Home / 27,782.90-38,340.30-15,207.62

Finding the Fourth Proportional to 27,782.90, 38,340.30 and 15,207.62

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Solution

The fourth proportional to 27,782.90, 38,340.30 and 15,207.62 is: 20,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,782.90 : 38,340.30 = 15,207.62 : x
  2. Step 2: Convert to fraction form
    27,782.90/38,340.30 = 15,207.62/x
  3. Step 3: Cross multiply
    27,782.90x = 38,340.30 × 15,207.62
  4. Step 4: Simplify right side
    27,782.90x = 583,064,713.09
  5. Step 5: Solve for x
    x = 583,064,713.09/27,782.90
  6. Step 6: Final answer
    x = 20,986.46

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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.