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Finding the Fourth Proportional to 15,823.61, 21,836.48 and 9,453.09

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Solution

The fourth proportional to 15,823.61, 21,836.48 and 9,453.09 is: 13,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,823.61 : 21,836.48 = 9,453.09 : x
  2. Step 2: Convert to fraction form
    15,823.61/21,836.48 = 9,453.09/x
  3. Step 3: Cross multiply
    15,823.61x = 21,836.48 × 9,453.09
  4. Step 4: Simplify right side
    15,823.61x = 206,422,210.72
  5. Step 5: Solve for x
    x = 206,422,210.72/15,823.61
  6. Step 6: Final answer
    x = 13,045.20

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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.