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Finding the Fourth Proportional to 18,623, 25,699.83 and 10,239.50

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Solution

The fourth proportional to 18,623, 25,699.83 and 10,239.50 is: 14,130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,623 : 25,699.83 = 10,239.50 : x
  2. Step 2: Convert to fraction form
    18,623/25,699.83 = 10,239.50/x
  3. Step 3: Cross multiply
    18,623x = 25,699.83 × 10,239.50
  4. Step 4: Simplify right side
    18,623x = 263,153,409.29
  5. Step 5: Solve for x
    x = 263,153,409.29/18,623
  6. Step 6: Final answer
    x = 14,130.56

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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.