Home / 21,578.19-29,775.99-12,017.35

Finding the Fourth Proportional to 21,578.19, 29,775.99 and 12,017.35

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Solution

The fourth proportional to 21,578.19, 29,775.99 and 12,017.35 is: 16,582.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,578.19 : 29,775.99 = 12,017.35 : x
  2. Step 2: Convert to fraction form
    21,578.19/29,775.99 = 12,017.35/x
  3. Step 3: Cross multiply
    21,578.19x = 29,775.99 × 12,017.35
  4. Step 4: Simplify right side
    21,578.19x = 357,828,493.43
  5. Step 5: Solve for x
    x = 357,828,493.43/21,578.19
  6. Step 6: Final answer
    x = 16,582.88

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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.