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Finding the Fourth Proportional to 19,409.69, 29,129.00 and 14,423.55

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Solution

The fourth proportional to 19,409.69, 29,129.00 and 14,423.55 is: 21,646.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,409.69 : 29,129.00 = 14,423.55 : x
  2. Step 2: Convert to fraction form
    19,409.69/29,129.00 = 14,423.55/x
  3. Step 3: Cross multiply
    19,409.69x = 29,129.00 × 14,423.55
  4. Step 4: Simplify right side
    19,409.69x = 420,143,515.83
  5. Step 5: Solve for x
    x = 420,143,515.83/19,409.69
  6. Step 6: Final answer
    x = 21,646.08

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1.5x scale

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.