Home / 21,292.74-31,929.37-7,955.95

Finding the Fourth Proportional to 21,292.74, 31,929.37 and 7,955.95

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Solution

The fourth proportional to 21,292.74, 31,929.37 and 7,955.95 is: 11,930.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.74 : 31,929.37 = 7,955.95 : x
  2. Step 2: Convert to fraction form
    21,292.74/31,929.37 = 7,955.95/x
  3. Step 3: Cross multiply
    21,292.74x = 31,929.37 × 7,955.95
  4. Step 4: Simplify right side
    21,292.74x = 254,028,603.35
  5. Step 5: Solve for x
    x = 254,028,603.35/21,292.74
  6. Step 6: Final answer
    x = 11,930.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.