Home / 39,084.12-53,935.88-21,178.67

Finding the Fourth Proportional to 39,084.12, 53,935.88 and 21,178.67

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Solution

The fourth proportional to 39,084.12, 53,935.88 and 21,178.67 is: 29,226.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,084.12 : 53,935.88 = 21,178.67 : x
  2. Step 2: Convert to fraction form
    39,084.12/53,935.88 = 21,178.67/x
  3. Step 3: Cross multiply
    39,084.12x = 53,935.88 × 21,178.67
  4. Step 4: Simplify right side
    39,084.12x = 1,142,289,828.11
  5. Step 5: Solve for x
    x = 1,142,289,828.11/39,084.12
  6. Step 6: Final answer
    x = 29,226.44

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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.