Home / 28,217.60-38,927.20-19,839.04

Finding the Fourth Proportional to 28,217.60, 38,927.20 and 19,839.04

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Solution

The fourth proportional to 28,217.60, 38,927.20 and 19,839.04 is: 27,368.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.60 : 38,927.20 = 19,839.04 : x
  2. Step 2: Convert to fraction form
    28,217.60/38,927.20 = 19,839.04/x
  3. Step 3: Cross multiply
    28,217.60x = 38,927.20 × 19,839.04
  4. Step 4: Simplify right side
    28,217.60x = 772,278,277.89
  5. Step 5: Solve for x
    x = 772,278,277.89/28,217.60
  6. Step 6: Final answer
    x = 27,368.67

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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.