Home / 43,864.96-65,798.40-20,485.12

Finding the Fourth Proportional to 43,864.96, 65,798.40 and 20,485.12

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Solution

The fourth proportional to 43,864.96, 65,798.40 and 20,485.12 is: 30,728.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,864.96 : 65,798.40 = 20,485.12 : x
  2. Step 2: Convert to fraction form
    43,864.96/65,798.40 = 20,485.12/x
  3. Step 3: Cross multiply
    43,864.96x = 65,798.40 × 20,485.12
  4. Step 4: Simplify right side
    43,864.96x = 1,347,888,119.81
  5. Step 5: Solve for x
    x = 1,347,888,119.81/43,864.96
  6. Step 6: Final answer
    x = 30,728.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.