Home / 19,173.77-28,767.80-8,640.63

Finding the Fourth Proportional to 19,173.77, 28,767.80 and 8,640.63

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Solution

The fourth proportional to 19,173.77, 28,767.80 and 8,640.63 is: 12,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,173.77 : 28,767.80 = 8,640.63 : x
  2. Step 2: Convert to fraction form
    19,173.77/28,767.80 = 8,640.63/x
  3. Step 3: Cross multiply
    19,173.77x = 28,767.80 × 8,640.63
  4. Step 4: Simplify right side
    19,173.77x = 248,571,872.51
  5. Step 5: Solve for x
    x = 248,571,872.51/19,173.77
  6. Step 6: Final answer
    x = 12,964.17

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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.