Home / 18,936-28,270.45-14,470.08

Finding the Fourth Proportional to 18,936, 28,270.45 and 14,470.08

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Solution

The fourth proportional to 18,936, 28,270.45 and 14,470.08 is: 21,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936 : 28,270.45 = 14,470.08 : x
  2. Step 2: Convert to fraction form
    18,936/28,270.45 = 14,470.08/x
  3. Step 3: Cross multiply
    18,936x = 28,270.45 × 14,470.08
  4. Step 4: Simplify right side
    18,936x = 409,075,600.79
  5. Step 5: Solve for x
    x = 409,075,600.79/18,936
  6. Step 6: Final answer
    x = 21,603.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.