Home / 11,145.90-15,368.73-7,107.35

Finding the Fourth Proportional to 11,145.90, 15,368.73 and 7,107.35

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Solution

The fourth proportional to 11,145.90, 15,368.73 and 7,107.35 is: 9,800.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.90 : 15,368.73 = 7,107.35 : x
  2. Step 2: Convert to fraction form
    11,145.90/15,368.73 = 7,107.35/x
  3. Step 3: Cross multiply
    11,145.90x = 15,368.73 × 7,107.35
  4. Step 4: Simplify right side
    11,145.90x = 109,230,866.32
  5. Step 5: Solve for x
    x = 109,230,866.32/11,145.90
  6. Step 6: Final answer
    x = 9,800.09

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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.