Home / 39,811.86-54,938.16-21,903.96

Finding the Fourth Proportional to 39,811.86, 54,938.16 and 21,903.96

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Solution

The fourth proportional to 39,811.86, 54,938.16 and 21,903.96 is: 30,226.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,811.86 : 54,938.16 = 21,903.96 : x
  2. Step 2: Convert to fraction form
    39,811.86/54,938.16 = 21,903.96/x
  3. Step 3: Cross multiply
    39,811.86x = 54,938.16 × 21,903.96
  4. Step 4: Simplify right side
    39,811.86x = 1,203,363,259.11
  5. Step 5: Solve for x
    x = 1,203,363,259.11/39,811.86
  6. Step 6: Final answer
    x = 30,226.25

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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.