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Finding the Fourth Proportional to 18,666.80, 28,001.28 and 7,573.04

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Solution

The fourth proportional to 18,666.80, 28,001.28 and 7,573.04 is: 11,360.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.80 : 28,001.28 = 7,573.04 : x
  2. Step 2: Convert to fraction form
    18,666.80/28,001.28 = 7,573.04/x
  3. Step 3: Cross multiply
    18,666.80x = 28,001.28 × 7,573.04
  4. Step 4: Simplify right side
    18,666.80x = 212,054,813.49
  5. Step 5: Solve for x
    x = 212,054,813.49/18,666.80
  6. Step 6: Final answer
    x = 11,360.00

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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.