Home / 12,725.10-19,087.65-12,506.40

Finding the Fourth Proportional to 12,725.10, 19,087.65 and 12,506.40

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Solution

The fourth proportional to 12,725.10, 19,087.65 and 12,506.40 is: 18,759.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.10 : 19,087.65 = 12,506.40 : x
  2. Step 2: Convert to fraction form
    12,725.10/19,087.65 = 12,506.40/x
  3. Step 3: Cross multiply
    12,725.10x = 19,087.65 × 12,506.40
  4. Step 4: Simplify right side
    12,725.10x = 238,717,785.96
  5. Step 5: Solve for x
    x = 238,717,785.96/12,725.10
  6. Step 6: Final answer
    x = 18,759.60

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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.