Home / 27,801.86-38,369.31-15,866.99

Finding the Fourth Proportional to 27,801.86, 38,369.31 and 15,866.99

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Solution

The fourth proportional to 27,801.86, 38,369.31 and 15,866.99 is: 21,898.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,801.86 : 38,369.31 = 15,866.99 : x
  2. Step 2: Convert to fraction form
    27,801.86/38,369.31 = 15,866.99/x
  3. Step 3: Cross multiply
    27,801.86x = 38,369.31 × 15,866.99
  4. Step 4: Simplify right side
    27,801.86x = 608,805,350.61
  5. Step 5: Solve for x
    x = 608,805,350.61/27,801.86
  6. Step 6: Final answer
    x = 21,898.01

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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.