Home / 28,257.75-38,996.91-15,682.50

Finding the Fourth Proportional to 28,257.75, 38,996.91 and 15,682.50

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Solution

The fourth proportional to 28,257.75, 38,996.91 and 15,682.50 is: 21,642.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.75 : 38,996.91 = 15,682.50 : x
  2. Step 2: Convert to fraction form
    28,257.75/38,996.91 = 15,682.50/x
  3. Step 3: Cross multiply
    28,257.75x = 38,996.91 × 15,682.50
  4. Step 4: Simplify right side
    28,257.75x = 611,569,041.08
  5. Step 5: Solve for x
    x = 611,569,041.08/28,257.75
  6. Step 6: Final answer
    x = 21,642.52

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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.