Home / 25,395.12-35,023.55-15,321.42

Finding the Fourth Proportional to 25,395.12, 35,023.55 and 15,321.42

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Solution

The fourth proportional to 25,395.12, 35,023.55 and 15,321.42 is: 21,130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,395.12 : 35,023.55 = 15,321.42 : x
  2. Step 2: Convert to fraction form
    25,395.12/35,023.55 = 15,321.42/x
  3. Step 3: Cross multiply
    25,395.12x = 35,023.55 × 15,321.42
  4. Step 4: Simplify right side
    25,395.12x = 536,610,442.83
  5. Step 5: Solve for x
    x = 536,610,442.83/25,395.12
  6. Step 6: Final answer
    x = 21,130.46

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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.