Home / 39,038.85-53,873.60-21,133.84

Finding the Fourth Proportional to 39,038.85, 53,873.60 and 21,133.84

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Solution

The fourth proportional to 39,038.85, 53,873.60 and 21,133.84 is: 29,164.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,038.85 : 53,873.60 = 21,133.84 : x
  2. Step 2: Convert to fraction form
    39,038.85/53,873.60 = 21,133.84/x
  3. Step 3: Cross multiply
    39,038.85x = 53,873.60 × 21,133.84
  4. Step 4: Simplify right side
    39,038.85x = 1,138,555,802.27
  5. Step 5: Solve for x
    x = 1,138,555,802.27/39,038.85
  6. Step 6: Final answer
    x = 29,164.69

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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.