Home / 12,825.40-19,235.40-5,430.10

Finding the Fourth Proportional to 12,825.40, 19,235.40 and 5,430.10

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Solution

The fourth proportional to 12,825.40, 19,235.40 and 5,430.10 is: 8,144.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825.40 : 19,235.40 = 5,430.10 : x
  2. Step 2: Convert to fraction form
    12,825.40/19,235.40 = 5,430.10/x
  3. Step 3: Cross multiply
    12,825.40x = 19,235.40 × 5,430.10
  4. Step 4: Simplify right side
    12,825.40x = 104,450,145.54
  5. Step 5: Solve for x
    x = 104,450,145.54/12,825.40
  6. Step 6: Final answer
    x = 8,144.01

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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.