Home / 21,621.99-29,838.74-12,672.03

Finding the Fourth Proportional to 21,621.99, 29,838.74 and 12,672.03

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Solution

The fourth proportional to 21,621.99, 29,838.74 and 12,672.03 is: 17,487.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.99 : 29,838.74 = 12,672.03 : x
  2. Step 2: Convert to fraction form
    21,621.99/29,838.74 = 12,672.03/x
  3. Step 3: Cross multiply
    21,621.99x = 29,838.74 × 12,672.03
  4. Step 4: Simplify right side
    21,621.99x = 378,117,345.08
  5. Step 5: Solve for x
    x = 378,117,345.08/21,621.99
  6. Step 6: Final answer
    x = 17,487.63

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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.