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Finding the Fourth Proportional to 15,807.09, 21,813.53 and 8,733.81

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Solution

The fourth proportional to 15,807.09, 21,813.53 and 8,733.81 is: 12,052.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807.09 : 21,813.53 = 8,733.81 : x
  2. Step 2: Convert to fraction form
    15,807.09/21,813.53 = 8,733.81/x
  3. Step 3: Cross multiply
    15,807.09x = 21,813.53 × 8,733.81
  4. Step 4: Simplify right side
    15,807.09x = 190,515,182.78
  5. Step 5: Solve for x
    x = 190,515,182.78/15,807.09
  6. Step 6: Final answer
    x = 12,052.51

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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.