Home / 14,077.64-21,121.26-5,315.08

Finding the Fourth Proportional to 14,077.64, 21,121.26 and 5,315.08

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Solution

The fourth proportional to 14,077.64, 21,121.26 and 5,315.08 is: 7,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,077.64 : 21,121.26 = 5,315.08 : x
  2. Step 2: Convert to fraction form
    14,077.64/21,121.26 = 5,315.08/x
  3. Step 3: Cross multiply
    14,077.64x = 21,121.26 × 5,315.08
  4. Step 4: Simplify right side
    14,077.64x = 112,261,186.60
  5. Step 5: Solve for x
    x = 112,261,186.60/14,077.64
  6. Step 6: Final answer
    x = 7,974.43

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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.