Home / 13,261.07-19,890.11-3,400.58

Finding the Fourth Proportional to 13,261.07, 19,890.11 and 3,400.58

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Solution

The fourth proportional to 13,261.07, 19,890.11 and 3,400.58 is: 5,100.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.07 : 19,890.11 = 3,400.58 : x
  2. Step 2: Convert to fraction form
    13,261.07/19,890.11 = 3,400.58/x
  3. Step 3: Cross multiply
    13,261.07x = 19,890.11 × 3,400.58
  4. Step 4: Simplify right side
    13,261.07x = 67,637,810.81
  5. Step 5: Solve for x
    x = 67,637,810.81/13,261.07
  6. Step 6: Final answer
    x = 5,100.48

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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.