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Finding the Fourth Proportional to 18,109.71, 24,973.65 and 14,129.37

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Solution

The fourth proportional to 18,109.71, 24,973.65 and 14,129.37 is: 19,484.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.71 : 24,973.65 = 14,129.37 : x
  2. Step 2: Convert to fraction form
    18,109.71/24,973.65 = 14,129.37/x
  3. Step 3: Cross multiply
    18,109.71x = 24,973.65 × 14,129.37
  4. Step 4: Simplify right side
    18,109.71x = 352,861,941.10
  5. Step 5: Solve for x
    x = 352,861,941.10/18,109.71
  6. Step 6: Final answer
    x = 19,484.68

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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.