Home / 15,228.14-21,017.21-9,261.68

Finding the Fourth Proportional to 15,228.14, 21,017.21 and 9,261.68

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Solution

The fourth proportional to 15,228.14, 21,017.21 and 9,261.68 is: 12,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.14 : 21,017.21 = 9,261.68 : x
  2. Step 2: Convert to fraction form
    15,228.14/21,017.21 = 9,261.68/x
  3. Step 3: Cross multiply
    15,228.14x = 21,017.21 × 9,261.68
  4. Step 4: Simplify right side
    15,228.14x = 194,654,522.12
  5. Step 5: Solve for x
    x = 194,654,522.12/15,228.14
  6. Step 6: Final answer
    x = 12,782.56

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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.