Home / 38,582.10-53,243.01-21,815.70

Finding the Fourth Proportional to 38,582.10, 53,243.01 and 21,815.70

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Solution

The fourth proportional to 38,582.10, 53,243.01 and 21,815.70 is: 30,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,582.10 : 53,243.01 = 21,815.70 : x
  2. Step 2: Convert to fraction form
    38,582.10/53,243.01 = 21,815.70/x
  3. Step 3: Cross multiply
    38,582.10x = 53,243.01 × 21,815.70
  4. Step 4: Simplify right side
    38,582.10x = 1,161,533,533.26
  5. Step 5: Solve for x
    x = 1,161,533,533.26/38,582.10
  6. Step 6: Final answer
    x = 30,105.50

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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.