Home / 39,803.46-54,928.18-21,897.40

Finding the Fourth Proportional to 39,803.46, 54,928.18 and 21,897.40

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Solution

The fourth proportional to 39,803.46, 54,928.18 and 21,897.40 is: 30,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,803.46 : 54,928.18 = 21,897.40 : x
  2. Step 2: Convert to fraction form
    39,803.46/54,928.18 = 21,897.40/x
  3. Step 3: Cross multiply
    39,803.46x = 54,928.18 × 21,897.40
  4. Step 4: Simplify right side
    39,803.46x = 1,202,784,328.73
  5. Step 5: Solve for x
    x = 1,202,784,328.73/39,803.46
  6. Step 6: Final answer
    x = 30,218.08

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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.