Home / 28,678.60-43,010.70-10,206.28

Finding the Fourth Proportional to 28,678.60, 43,010.70 and 10,206.28

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Solution

The fourth proportional to 28,678.60, 43,010.70 and 10,206.28 is: 15,306.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.60 : 43,010.70 = 10,206.28 : x
  2. Step 2: Convert to fraction form
    28,678.60/43,010.70 = 10,206.28/x
  3. Step 3: Cross multiply
    28,678.60x = 43,010.70 × 10,206.28
  4. Step 4: Simplify right side
    28,678.60x = 438,979,247.20
  5. Step 5: Solve for x
    x = 438,979,247.20/28,678.60
  6. Step 6: Final answer
    x = 15,306.86

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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.