Home / 38,499.07-53,128.70-20,835.07

Finding the Fourth Proportional to 38,499.07, 53,128.70 and 20,835.07

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Solution

The fourth proportional to 38,499.07, 53,128.70 and 20,835.07 is: 28,752.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,499.07 : 53,128.70 = 20,835.07 : x
  2. Step 2: Convert to fraction form
    38,499.07/53,128.70 = 20,835.07/x
  3. Step 3: Cross multiply
    38,499.07x = 53,128.70 × 20,835.07
  4. Step 4: Simplify right side
    38,499.07x = 1,106,940,183.51
  5. Step 5: Solve for x
    x = 1,106,940,183.51/38,499.07
  6. Step 6: Final answer
    x = 28,752.39

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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.