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Finding the Fourth Proportional to 14,775.01, 20,386.46 and 8,641.54

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Solution

The fourth proportional to 14,775.01, 20,386.46 and 8,641.54 is: 11,923.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.01 : 20,386.46 = 8,641.54 : x
  2. Step 2: Convert to fraction form
    14,775.01/20,386.46 = 8,641.54/x
  3. Step 3: Cross multiply
    14,775.01x = 20,386.46 × 8,641.54
  4. Step 4: Simplify right side
    14,775.01x = 176,170,317.66
  5. Step 5: Solve for x
    x = 176,170,317.66/14,775.01
  6. Step 6: Final answer
    x = 11,923.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.