Home / 53,969.69-80,905.53-18,890.21

Finding the Fourth Proportional to 53,969.69, 80,905.53 and 18,890.21

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Solution

The fourth proportional to 53,969.69, 80,905.53 and 18,890.21 is: 28,318.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,969.69 : 80,905.53 = 18,890.21 : x
  2. Step 2: Convert to fraction form
    53,969.69/80,905.53 = 18,890.21/x
  3. Step 3: Cross multiply
    53,969.69x = 80,905.53 × 18,890.21
  4. Step 4: Simplify right side
    53,969.69x = 1,528,322,451.86
  5. Step 5: Solve for x
    x = 1,528,322,451.86/53,969.69
  6. Step 6: Final answer
    x = 28,318.16

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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.