Home / 20,295.41-28,010.93-12,742.82

Finding the Fourth Proportional to 20,295.41, 28,010.93 and 12,742.82

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Solution

The fourth proportional to 20,295.41, 28,010.93 and 12,742.82 is: 17,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.41 : 28,010.93 = 12,742.82 : x
  2. Step 2: Convert to fraction form
    20,295.41/28,010.93 = 12,742.82/x
  3. Step 3: Cross multiply
    20,295.41x = 28,010.93 × 12,742.82
  4. Step 4: Simplify right side
    20,295.41x = 356,938,035.25
  5. Step 5: Solve for x
    x = 356,938,035.25/20,295.41
  6. Step 6: Final answer
    x = 17,587.14

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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.