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Finding the Fourth Proportional to 14,484.39, 19,978.14 and 13,293.21

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Solution

The fourth proportional to 14,484.39, 19,978.14 and 13,293.21 is: 18,335.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,484.39 : 19,978.14 = 13,293.21 : x
  2. Step 2: Convert to fraction form
    14,484.39/19,978.14 = 13,293.21/x
  3. Step 3: Cross multiply
    14,484.39x = 19,978.14 × 13,293.21
  4. Step 4: Simplify right side
    14,484.39x = 265,573,610.43
  5. Step 5: Solve for x
    x = 265,573,610.43/14,484.39
  6. Step 6: Final answer
    x = 18,335.16

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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.