Home / 38,015.79-56,979.87-20,448.69

Finding the Fourth Proportional to 38,015.79, 56,979.87 and 20,448.69

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Solution

The fourth proportional to 38,015.79, 56,979.87 and 20,448.69 is: 30,649.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,015.79 : 56,979.87 = 20,448.69 : x
  2. Step 2: Convert to fraction form
    38,015.79/56,979.87 = 20,448.69/x
  3. Step 3: Cross multiply
    38,015.79x = 56,979.87 × 20,448.69
  4. Step 4: Simplify right side
    38,015.79x = 1,165,163,697.87
  5. Step 5: Solve for x
    x = 1,165,163,697.87/38,015.79
  6. Step 6: Final answer
    x = 30,649.47

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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.