Home / 28,547.30-39,395.34-15,801.36

Finding the Fourth Proportional to 28,547.30, 39,395.34 and 15,801.36

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Solution

The fourth proportional to 28,547.30, 39,395.34 and 15,801.36 is: 21,805.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.30 : 39,395.34 = 15,801.36 : x
  2. Step 2: Convert to fraction form
    28,547.30/39,395.34 = 15,801.36/x
  3. Step 3: Cross multiply
    28,547.30x = 39,395.34 × 15,801.36
  4. Step 4: Simplify right side
    28,547.30x = 622,499,949.66
  5. Step 5: Solve for x
    x = 622,499,949.66/28,547.30
  6. Step 6: Final answer
    x = 21,805.92

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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.