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Finding the Fourth Proportional to 14,447, 19,938.48 and 8,159.78

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Solution

The fourth proportional to 14,447, 19,938.48 and 8,159.78 is: 11,261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,447 : 19,938.48 = 8,159.78 : x
  2. Step 2: Convert to fraction form
    14,447/19,938.48 = 8,159.78/x
  3. Step 3: Cross multiply
    14,447x = 19,938.48 × 8,159.78
  4. Step 4: Simplify right side
    14,447x = 162,693,610.33
  5. Step 5: Solve for x
    x = 162,693,610.33/14,447
  6. Step 6: Final answer
    x = 11,261.41

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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.