Home / 28,791.56-39,730.82-16,215.50

Finding the Fourth Proportional to 28,791.56, 39,730.82 and 16,215.50

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Solution

The fourth proportional to 28,791.56, 39,730.82 and 16,215.50 is: 22,376.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.56 : 39,730.82 = 16,215.50 : x
  2. Step 2: Convert to fraction form
    28,791.56/39,730.82 = 16,215.50/x
  3. Step 3: Cross multiply
    28,791.56x = 39,730.82 × 16,215.50
  4. Step 4: Simplify right side
    28,791.56x = 644,255,111.71
  5. Step 5: Solve for x
    x = 644,255,111.71/28,791.56
  6. Step 6: Final answer
    x = 22,376.53

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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.