Home / 22,239.69-30,686.73-12,679.17

Finding the Fourth Proportional to 22,239.69, 30,686.73 and 12,679.17

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Solution

The fourth proportional to 22,239.69, 30,686.73 and 12,679.17 is: 17,494.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,239.69 : 30,686.73 = 12,679.17 : x
  2. Step 2: Convert to fraction form
    22,239.69/30,686.73 = 12,679.17/x
  3. Step 3: Cross multiply
    22,239.69x = 30,686.73 × 12,679.17
  4. Step 4: Simplify right side
    22,239.69x = 389,082,266.41
  5. Step 5: Solve for x
    x = 389,082,266.41/22,239.69
  6. Step 6: Final answer
    x = 17,494.95

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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.