Home / 20,528.40-30,759.74-18,560.10

Finding the Fourth Proportional to 20,528.40, 30,759.74 and 18,560.10

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Solution

The fourth proportional to 20,528.40, 30,759.74 and 18,560.10 is: 27,810.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.40 : 30,759.74 = 18,560.10 : x
  2. Step 2: Convert to fraction form
    20,528.40/30,759.74 = 18,560.10/x
  3. Step 3: Cross multiply
    20,528.40x = 30,759.74 × 18,560.10
  4. Step 4: Simplify right side
    20,528.40x = 570,903,850.37
  5. Step 5: Solve for x
    x = 570,903,850.37/20,528.40
  6. Step 6: Final answer
    x = 27,810.44

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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.