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Finding the Fourth Proportional to 15,762.18, 21,751.79 and 8,592.09

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Solution

The fourth proportional to 15,762.18, 21,751.79 and 8,592.09 is: 11,857.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,762.18 : 21,751.79 = 8,592.09 : x
  2. Step 2: Convert to fraction form
    15,762.18/21,751.79 = 8,592.09/x
  3. Step 3: Cross multiply
    15,762.18x = 21,751.79 × 8,592.09
  4. Step 4: Simplify right side
    15,762.18x = 186,893,337.34
  5. Step 5: Solve for x
    x = 186,893,337.34/15,762.18
  6. Step 6: Final answer
    x = 11,857.07

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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.