Home / 28,936.08-39,916.80-18,307.44

Finding the Fourth Proportional to 28,936.08, 39,916.80 and 18,307.44

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Solution

The fourth proportional to 28,936.08, 39,916.80 and 18,307.44 is: 25,254.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,936.08 : 39,916.80 = 18,307.44 : x
  2. Step 2: Convert to fraction form
    28,936.08/39,916.80 = 18,307.44/x
  3. Step 3: Cross multiply
    28,936.08x = 39,916.80 × 18,307.44
  4. Step 4: Simplify right side
    28,936.08x = 730,774,420.99
  5. Step 5: Solve for x
    x = 730,774,420.99/28,936.08
  6. Step 6: Final answer
    x = 25,254.78

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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.