Home / 12,889.36-17,792.76-8,703.28

Finding the Fourth Proportional to 12,889.36, 17,792.76 and 8,703.28

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Solution

The fourth proportional to 12,889.36, 17,792.76 and 8,703.28 is: 12,014.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.36 : 17,792.76 = 8,703.28 : x
  2. Step 2: Convert to fraction form
    12,889.36/17,792.76 = 8,703.28/x
  3. Step 3: Cross multiply
    12,889.36x = 17,792.76 × 8,703.28
  4. Step 4: Simplify right side
    12,889.36x = 154,855,372.25
  5. Step 5: Solve for x
    x = 154,855,372.25/12,889.36
  6. Step 6: Final answer
    x = 12,014.20

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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.