Home / 28,870.63-39,819.40-19,933.09

Finding the Fourth Proportional to 28,870.63, 39,819.40 and 19,933.09

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Solution

The fourth proportional to 28,870.63, 39,819.40 and 19,933.09 is: 27,492.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.63 : 39,819.40 = 19,933.09 : x
  2. Step 2: Convert to fraction form
    28,870.63/39,819.40 = 19,933.09/x
  3. Step 3: Cross multiply
    28,870.63x = 39,819.40 × 19,933.09
  4. Step 4: Simplify right side
    28,870.63x = 793,723,683.95
  5. Step 5: Solve for x
    x = 793,723,683.95/28,870.63
  6. Step 6: Final answer
    x = 27,492.43

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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.