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Finding the Fourth Proportional to 18,772.93, 25,909.00 and 12,317.99

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Solution

The fourth proportional to 18,772.93, 25,909.00 and 12,317.99 is: 17,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.93 : 25,909.00 = 12,317.99 : x
  2. Step 2: Convert to fraction form
    18,772.93/25,909.00 = 12,317.99/x
  3. Step 3: Cross multiply
    18,772.93x = 25,909.00 × 12,317.99
  4. Step 4: Simplify right side
    18,772.93x = 319,146,836.89
  5. Step 5: Solve for x
    x = 319,146,836.89/18,772.93
  6. Step 6: Final answer
    x = 17,000.38

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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.