Home / 53,969.12-80,904.68-18,889.64

Finding the Fourth Proportional to 53,969.12, 80,904.68 and 18,889.64

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Solution

The fourth proportional to 53,969.12, 80,904.68 and 18,889.64 is: 28,317.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,969.12 : 80,904.68 = 18,889.64 : x
  2. Step 2: Convert to fraction form
    53,969.12/80,904.68 = 18,889.64/x
  3. Step 3: Cross multiply
    53,969.12x = 80,904.68 × 18,889.64
  4. Step 4: Simplify right side
    53,969.12x = 1,528,260,279.52
  5. Step 5: Solve for x
    x = 1,528,260,279.52/53,969.12
  6. Step 6: Final answer
    x = 28,317.31

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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.