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Finding the Fourth Proportional to 18,864.99, 28,301.04 and 9,004.98

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Solution

The fourth proportional to 18,864.99, 28,301.04 and 9,004.98 is: 13,509.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864.99 : 28,301.04 = 9,004.98 : x
  2. Step 2: Convert to fraction form
    18,864.99/28,301.04 = 9,004.98/x
  3. Step 3: Cross multiply
    18,864.99x = 28,301.04 × 9,004.98
  4. Step 4: Simplify right side
    18,864.99x = 254,850,299.18
  5. Step 5: Solve for x
    x = 254,850,299.18/18,864.99
  6. Step 6: Final answer
    x = 13,509.17

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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.