Home / 39,289.34-54,220.62-21,384.99

Finding the Fourth Proportional to 39,289.34, 54,220.62 and 21,384.99

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Solution

The fourth proportional to 39,289.34, 54,220.62 and 21,384.99 is: 29,512.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,289.34 : 54,220.62 = 21,384.99 : x
  2. Step 2: Convert to fraction form
    39,289.34/54,220.62 = 21,384.99/x
  3. Step 3: Cross multiply
    39,289.34x = 54,220.62 × 21,384.99
  4. Step 4: Simplify right side
    39,289.34x = 1,159,507,309.57
  5. Step 5: Solve for x
    x = 1,159,507,309.57/39,289.34
  6. Step 6: Final answer
    x = 29,512.01

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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.