Home / 20,118.95-27,762.84-11,166.45

Finding the Fourth Proportional to 20,118.95, 27,762.84 and 11,166.45

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Solution

The fourth proportional to 20,118.95, 27,762.84 and 11,166.45 is: 15,408.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.95 : 27,762.84 = 11,166.45 : x
  2. Step 2: Convert to fraction form
    20,118.95/27,762.84 = 11,166.45/x
  3. Step 3: Cross multiply
    20,118.95x = 27,762.84 × 11,166.45
  4. Step 4: Simplify right side
    20,118.95x = 310,012,364.72
  5. Step 5: Solve for x
    x = 310,012,364.72/20,118.95
  6. Step 6: Final answer
    x = 15,408.98

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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.