Home / 28,861.16-39,814.72-18,785.92

Finding the Fourth Proportional to 28,861.16, 39,814.72 and 18,785.92

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Solution

The fourth proportional to 28,861.16, 39,814.72 and 18,785.92 is: 25,915.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.16 : 39,814.72 = 18,785.92 : x
  2. Step 2: Convert to fraction form
    28,861.16/39,814.72 = 18,785.92/x
  3. Step 3: Cross multiply
    28,861.16x = 39,814.72 × 18,785.92
  4. Step 4: Simplify right side
    28,861.16x = 747,956,144.74
  5. Step 5: Solve for x
    x = 747,956,144.74/28,861.16
  6. Step 6: Final answer
    x = 25,915.67

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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.