Home / 28,977.98-40,008.21-19,918.40

Finding the Fourth Proportional to 28,977.98, 40,008.21 and 19,918.40

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Solution

The fourth proportional to 28,977.98, 40,008.21 and 19,918.40 is: 27,500.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.98 : 40,008.21 = 19,918.40 : x
  2. Step 2: Convert to fraction form
    28,977.98/40,008.21 = 19,918.40/x
  3. Step 3: Cross multiply
    28,977.98x = 40,008.21 × 19,918.40
  4. Step 4: Simplify right side
    28,977.98x = 796,899,530.06
  5. Step 5: Solve for x
    x = 796,899,530.06/28,977.98
  6. Step 6: Final answer
    x = 27,500.18

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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.