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Finding the Fourth Proportional to 14,407.54, 21,621.03 and 5,641.36

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Solution

The fourth proportional to 14,407.54, 21,621.03 and 5,641.36 is: 8,465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,407.54 : 21,621.03 = 5,641.36 : x
  2. Step 2: Convert to fraction form
    14,407.54/21,621.03 = 5,641.36/x
  3. Step 3: Cross multiply
    14,407.54x = 21,621.03 × 5,641.36
  4. Step 4: Simplify right side
    14,407.54x = 121,971,877.49
  5. Step 5: Solve for x
    x = 121,971,877.49/14,407.54
  6. Step 6: Final answer
    x = 8,465.84

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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.