Home / 27,520.58-37,975.08-15,421.70

Finding the Fourth Proportional to 27,520.58, 37,975.08 and 15,421.70

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Solution

The fourth proportional to 27,520.58, 37,975.08 and 15,421.70 is: 21,280.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,520.58 : 37,975.08 = 15,421.70 : x
  2. Step 2: Convert to fraction form
    27,520.58/37,975.08 = 15,421.70/x
  3. Step 3: Cross multiply
    27,520.58x = 37,975.08 × 15,421.70
  4. Step 4: Simplify right side
    27,520.58x = 585,640,291.24
  5. Step 5: Solve for x
    x = 585,640,291.24/27,520.58
  6. Step 6: Final answer
    x = 21,280.09

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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.