Home / 18,725.88-28,085.58-10,271.40

Finding the Fourth Proportional to 18,725.88, 28,085.58 and 10,271.40

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Solution

The fourth proportional to 18,725.88, 28,085.58 and 10,271.40 is: 15,405.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.88 : 28,085.58 = 10,271.40 : x
  2. Step 2: Convert to fraction form
    18,725.88/28,085.58 = 10,271.40/x
  3. Step 3: Cross multiply
    18,725.88x = 28,085.58 × 10,271.40
  4. Step 4: Simplify right side
    18,725.88x = 288,478,226.41
  5. Step 5: Solve for x
    x = 288,478,226.41/18,725.88
  6. Step 6: Final answer
    x = 15,405.32

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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.