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Finding the Fourth Proportional to 18,237.86, 27,356.79 and 4,386.86

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Solution

The fourth proportional to 18,237.86, 27,356.79 and 4,386.86 is: 6,580.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,237.86 : 27,356.79 = 4,386.86 : x
  2. Step 2: Convert to fraction form
    18,237.86/27,356.79 = 4,386.86/x
  3. Step 3: Cross multiply
    18,237.86x = 27,356.79 × 4,386.86
  4. Step 4: Simplify right side
    18,237.86x = 120,010,271.00
  5. Step 5: Solve for x
    x = 120,010,271.00/18,237.86
  6. Step 6: Final answer
    x = 6,580.28

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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.