Home / 14,020.49-21,012.11-7,777.22

Finding the Fourth Proportional to 14,020.49, 21,012.11 and 7,777.22

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Solution

The fourth proportional to 14,020.49, 21,012.11 and 7,777.22 is: 11,655.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,020.49 : 21,012.11 = 7,777.22 : x
  2. Step 2: Convert to fraction form
    14,020.49/21,012.11 = 7,777.22/x
  3. Step 3: Cross multiply
    14,020.49x = 21,012.11 × 7,777.22
  4. Step 4: Simplify right side
    14,020.49x = 163,415,687.35
  5. Step 5: Solve for x
    x = 163,415,687.35/14,020.49
  6. Step 6: Final answer
    x = 11,655.49

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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.