Home / 12,800.36-19,203.80-5,406.68

Finding the Fourth Proportional to 12,800.36, 19,203.80 and 5,406.68

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Solution

The fourth proportional to 12,800.36, 19,203.80 and 5,406.68 is: 8,111.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.36 : 19,203.80 = 5,406.68 : x
  2. Step 2: Convert to fraction form
    12,800.36/19,203.80 = 5,406.68/x
  3. Step 3: Cross multiply
    12,800.36x = 19,203.80 × 5,406.68
  4. Step 4: Simplify right side
    12,800.36x = 103,828,801.38
  5. Step 5: Solve for x
    x = 103,828,801.38/12,800.36
  6. Step 6: Final answer
    x = 8,111.40

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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.