Home / 12,698.42-19,029.48-7,140.10

Finding the Fourth Proportional to 12,698.42, 19,029.48 and 7,140.10

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Solution

The fourth proportional to 12,698.42, 19,029.48 and 7,140.10 is: 10,699.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,698.42 : 19,029.48 = 7,140.10 : x
  2. Step 2: Convert to fraction form
    12,698.42/19,029.48 = 7,140.10/x
  3. Step 3: Cross multiply
    12,698.42x = 19,029.48 × 7,140.10
  4. Step 4: Simplify right side
    12,698.42x = 135,872,391.64
  5. Step 5: Solve for x
    x = 135,872,391.64/12,698.42
  6. Step 6: Final answer
    x = 10,699.94

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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.