Home / 21,756.64-30,023.56-12,328.24

Finding the Fourth Proportional to 21,756.64, 30,023.56 and 12,328.24

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Solution

The fourth proportional to 21,756.64, 30,023.56 and 12,328.24 is: 17,012.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.64 : 30,023.56 = 12,328.24 : x
  2. Step 2: Convert to fraction form
    21,756.64/30,023.56 = 12,328.24/x
  3. Step 3: Cross multiply
    21,756.64x = 30,023.56 × 12,328.24
  4. Step 4: Simplify right side
    21,756.64x = 370,137,653.33
  5. Step 5: Solve for x
    x = 370,137,653.33/21,756.64
  6. Step 6: Final answer
    x = 17,012.63

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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.