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Finding the Fourth Proportional to 18,605.58, 25,678.74 and 14,362.80

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Solution

The fourth proportional to 18,605.58, 25,678.74 and 14,362.80 is: 19,823.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.58 : 25,678.74 = 14,362.80 : x
  2. Step 2: Convert to fraction form
    18,605.58/25,678.74 = 14,362.80/x
  3. Step 3: Cross multiply
    18,605.58x = 25,678.74 × 14,362.80
  4. Step 4: Simplify right side
    18,605.58x = 368,818,606.87
  5. Step 5: Solve for x
    x = 368,818,606.87/18,605.58
  6. Step 6: Final answer
    x = 19,823.01

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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.