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Finding the Fourth Proportional to 15,700.06, 21,666 and 8,529.82

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Solution

The fourth proportional to 15,700.06, 21,666 and 8,529.82 is: 11,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,700.06 : 21,666 = 8,529.82 : x
  2. Step 2: Convert to fraction form
    15,700.06/21,666 = 8,529.82/x
  3. Step 3: Cross multiply
    15,700.06x = 21,666 × 8,529.82
  4. Step 4: Simplify right side
    15,700.06x = 184,807,080.12
  5. Step 5: Solve for x
    x = 184,807,080.12/15,700.06
  6. Step 6: Final answer
    x = 11,771.11

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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.