Home / 28,887.11-39,863.72-16,140.55

Finding the Fourth Proportional to 28,887.11, 39,863.72 and 16,140.55

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Solution

The fourth proportional to 28,887.11, 39,863.72 and 16,140.55 is: 22,273.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.11 : 39,863.72 = 16,140.55 : x
  2. Step 2: Convert to fraction form
    28,887.11/39,863.72 = 16,140.55/x
  3. Step 3: Cross multiply
    28,887.11x = 39,863.72 × 16,140.55
  4. Step 4: Simplify right side
    28,887.11x = 643,422,085.82
  5. Step 5: Solve for x
    x = 643,422,085.82/28,887.11
  6. Step 6: Final answer
    x = 22,273.67

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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.