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Finding the Fourth Proportional to 15,807.94, 21,815.13 and 8,733.94

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Solution

The fourth proportional to 15,807.94, 21,815.13 and 8,733.94 is: 12,052.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807.94 : 21,815.13 = 8,733.94 : x
  2. Step 2: Convert to fraction form
    15,807.94/21,815.13 = 8,733.94/x
  3. Step 3: Cross multiply
    15,807.94x = 21,815.13 × 8,733.94
  4. Step 4: Simplify right side
    15,807.94x = 190,532,036.51
  5. Step 5: Solve for x
    x = 190,532,036.51/15,807.94
  6. Step 6: Final answer
    x = 12,052.93

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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.