Home / 28,271.25-39,014.37-15,522.40

Finding the Fourth Proportional to 28,271.25, 39,014.37 and 15,522.40

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Solution

The fourth proportional to 28,271.25, 39,014.37 and 15,522.40 is: 21,420.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.25 : 39,014.37 = 15,522.40 : x
  2. Step 2: Convert to fraction form
    28,271.25/39,014.37 = 15,522.40/x
  3. Step 3: Cross multiply
    28,271.25x = 39,014.37 × 15,522.40
  4. Step 4: Simplify right side
    28,271.25x = 605,596,809.78
  5. Step 5: Solve for x
    x = 605,596,809.78/28,271.25
  6. Step 6: Final answer
    x = 21,420.94

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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.