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Finding the Fourth Proportional to 12,666.01, 19,004.48 and 6,821.45

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Solution

The fourth proportional to 12,666.01, 19,004.48 and 6,821.45 is: 10,235.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.01 : 19,004.48 = 6,821.45 : x
  2. Step 2: Convert to fraction form
    12,666.01/19,004.48 = 6,821.45/x
  3. Step 3: Cross multiply
    12,666.01x = 19,004.48 × 6,821.45
  4. Step 4: Simplify right side
    12,666.01x = 129,638,110.10
  5. Step 5: Solve for x
    x = 129,638,110.10/12,666.01
  6. Step 6: Final answer
    x = 10,235.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.