Home / 21,860.99-30,179.69-15,492.87

Finding the Fourth Proportional to 21,860.99, 30,179.69 and 15,492.87

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Solution

The fourth proportional to 21,860.99, 30,179.69 and 15,492.87 is: 21,388.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.99 : 30,179.69 = 15,492.87 : x
  2. Step 2: Convert to fraction form
    21,860.99/30,179.69 = 15,492.87/x
  3. Step 3: Cross multiply
    21,860.99x = 30,179.69 × 15,492.87
  4. Step 4: Simplify right side
    21,860.99x = 467,569,994.44
  5. Step 5: Solve for x
    x = 467,569,994.44/21,860.99
  6. Step 6: Final answer
    x = 21,388.33

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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.