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Finding the Fourth Proportional to 18,706.37, 28,064.68 and 9,335.07

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Solution

The fourth proportional to 18,706.37, 28,064.68 and 9,335.07 is: 14,005.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.37 : 28,064.68 = 9,335.07 : x
  2. Step 2: Convert to fraction form
    18,706.37/28,064.68 = 9,335.07/x
  3. Step 3: Cross multiply
    18,706.37x = 28,064.68 × 9,335.07
  4. Step 4: Simplify right side
    18,706.37x = 261,985,807.92
  5. Step 5: Solve for x
    x = 261,985,807.92/18,706.37
  6. Step 6: Final answer
    x = 14,005.17

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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.