Home / 28,857.06-39,810.69-19,428.66

Finding the Fourth Proportional to 28,857.06, 39,810.69 and 19,428.66

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Solution

The fourth proportional to 28,857.06, 39,810.69 and 19,428.66 is: 26,803.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.06 : 39,810.69 = 19,428.66 : x
  2. Step 2: Convert to fraction form
    28,857.06/39,810.69 = 19,428.66/x
  3. Step 3: Cross multiply
    28,857.06x = 39,810.69 × 19,428.66
  4. Step 4: Simplify right side
    28,857.06x = 773,468,360.38
  5. Step 5: Solve for x
    x = 773,468,360.38/28,857.06
  6. Step 6: Final answer
    x = 26,803.44

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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.