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Finding the Fourth Proportional to 18,929.15, 28,373.33 and 9,047.42

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Solution

The fourth proportional to 18,929.15, 28,373.33 and 9,047.42 is: 13,561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.15 : 28,373.33 = 9,047.42 : x
  2. Step 2: Convert to fraction form
    18,929.15/28,373.33 = 9,047.42/x
  3. Step 3: Cross multiply
    18,929.15x = 28,373.33 × 9,047.42
  4. Step 4: Simplify right side
    18,929.15x = 256,705,314.06
  5. Step 5: Solve for x
    x = 256,705,314.06/18,929.15
  6. Step 6: Final answer
    x = 13,561.38

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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.