Home / 15,297.39-21,108.40-8,582.99

Finding the Fourth Proportional to 15,297.39, 21,108.40 and 8,582.99

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Solution

The fourth proportional to 15,297.39, 21,108.40 and 8,582.99 is: 11,843.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.39 : 21,108.40 = 8,582.99 : x
  2. Step 2: Convert to fraction form
    15,297.39/21,108.40 = 8,582.99/x
  3. Step 3: Cross multiply
    15,297.39x = 21,108.40 × 8,582.99
  4. Step 4: Simplify right side
    15,297.39x = 181,173,059.12
  5. Step 5: Solve for x
    x = 181,173,059.12/15,297.39
  6. Step 6: Final answer
    x = 11,843.40

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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.