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Finding the Fourth Proportional to 14,417.64, 19,897.03 and 8,129.88

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Solution

The fourth proportional to 14,417.64, 19,897.03 and 8,129.88 is: 11,219.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,417.64 : 19,897.03 = 8,129.88 : x
  2. Step 2: Convert to fraction form
    14,417.64/19,897.03 = 8,129.88/x
  3. Step 3: Cross multiply
    14,417.64x = 19,897.03 × 8,129.88
  4. Step 4: Simplify right side
    14,417.64x = 161,760,466.26
  5. Step 5: Solve for x
    x = 161,760,466.26/14,417.64
  6. Step 6: Final answer
    x = 11,219.62

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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.