Home / 21,678.36-32,483.52-12,908.49

Finding the Fourth Proportional to 21,678.36, 32,483.52 and 12,908.49

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Solution

The fourth proportional to 21,678.36, 32,483.52 and 12,908.49 is: 19,342.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,678.36 : 32,483.52 = 12,908.49 : x
  2. Step 2: Convert to fraction form
    21,678.36/32,483.52 = 12,908.49/x
  3. Step 3: Cross multiply
    21,678.36x = 32,483.52 × 12,908.49
  4. Step 4: Simplify right side
    21,678.36x = 419,313,193.08
  5. Step 5: Solve for x
    x = 419,313,193.08/21,678.36
  6. Step 6: Final answer
    x = 19,342.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.