Home / 28,697.10-43,048.12-7,920.60

Finding the Fourth Proportional to 28,697.10, 43,048.12 and 7,920.60

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Solution

The fourth proportional to 28,697.10, 43,048.12 and 7,920.60 is: 11,881.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,697.10 : 43,048.12 = 7,920.60 : x
  2. Step 2: Convert to fraction form
    28,697.10/43,048.12 = 7,920.60/x
  3. Step 3: Cross multiply
    28,697.10x = 43,048.12 × 7,920.60
  4. Step 4: Simplify right side
    28,697.10x = 340,966,939.27
  5. Step 5: Solve for x
    x = 340,966,939.27/28,697.10
  6. Step 6: Final answer
    x = 11,881.58

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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.