Home / 12,893.50-17,792.40-7,228.81

Finding the Fourth Proportional to 12,893.50, 17,792.40 and 7,228.81

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Solution

The fourth proportional to 12,893.50, 17,792.40 and 7,228.81 is: 9,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,893.50 : 17,792.40 = 7,228.81 : x
  2. Step 2: Convert to fraction form
    12,893.50/17,792.40 = 7,228.81/x
  3. Step 3: Cross multiply
    12,893.50x = 17,792.40 × 7,228.81
  4. Step 4: Simplify right side
    12,893.50x = 128,617,879.04
  5. Step 5: Solve for x
    x = 128,617,879.04/12,893.50
  6. Step 6: Final answer
    x = 9,975.40

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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.