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Finding the Fourth Proportional to 15,668.02, 21,623.05 and 8,953.93

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Solution

The fourth proportional to 15,668.02, 21,623.05 and 8,953.93 is: 12,357.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,668.02 : 21,623.05 = 8,953.93 : x
  2. Step 2: Convert to fraction form
    15,668.02/21,623.05 = 8,953.93/x
  3. Step 3: Cross multiply
    15,668.02x = 21,623.05 × 8,953.93
  4. Step 4: Simplify right side
    15,668.02x = 193,611,192.68
  5. Step 5: Solve for x
    x = 193,611,192.68/15,668.02
  6. Step 6: Final answer
    x = 12,357.10

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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.