Home / 13,929.98-19,223.21-7,642.35

Finding the Fourth Proportional to 13,929.98, 19,223.21 and 7,642.35

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Solution

The fourth proportional to 13,929.98, 19,223.21 and 7,642.35 is: 10,546.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.98 : 19,223.21 = 7,642.35 : x
  2. Step 2: Convert to fraction form
    13,929.98/19,223.21 = 7,642.35/x
  3. Step 3: Cross multiply
    13,929.98x = 19,223.21 × 7,642.35
  4. Step 4: Simplify right side
    13,929.98x = 146,910,460.73
  5. Step 5: Solve for x
    x = 146,910,460.73/13,929.98
  6. Step 6: Final answer
    x = 10,546.35

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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.