Home / 15,228.96-21,018.69-9,180.29

Finding the Fourth Proportional to 15,228.96, 21,018.69 and 9,180.29

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Solution

The fourth proportional to 15,228.96, 21,018.69 and 9,180.29 is: 12,670.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.96 : 21,018.69 = 9,180.29 : x
  2. Step 2: Convert to fraction form
    15,228.96/21,018.69 = 9,180.29/x
  3. Step 3: Cross multiply
    15,228.96x = 21,018.69 × 9,180.29
  4. Step 4: Simplify right side
    15,228.96x = 192,957,603.94
  5. Step 5: Solve for x
    x = 192,957,603.94/15,228.96
  6. Step 6: Final answer
    x = 12,670.44

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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.