Home / 18,970.07-28,460.57-7,874.69

Finding the Fourth Proportional to 18,970.07, 28,460.57 and 7,874.69

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Solution

The fourth proportional to 18,970.07, 28,460.57 and 7,874.69 is: 11,814.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.07 : 28,460.57 = 7,874.69 : x
  2. Step 2: Convert to fraction form
    18,970.07/28,460.57 = 7,874.69/x
  3. Step 3: Cross multiply
    18,970.07x = 28,460.57 × 7,874.69
  4. Step 4: Simplify right side
    18,970.07x = 224,117,984.30
  5. Step 5: Solve for x
    x = 224,117,984.30/18,970.07
  6. Step 6: Final answer
    x = 11,814.30

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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.