Home / 30,847.68-42,582.24-18,907.20

Finding the Fourth Proportional to 30,847.68, 42,582.24 and 18,907.20

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Solution

The fourth proportional to 30,847.68, 42,582.24 and 18,907.20 is: 26,099.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,847.68 : 42,582.24 = 18,907.20 : x
  2. Step 2: Convert to fraction form
    30,847.68/42,582.24 = 18,907.20/x
  3. Step 3: Cross multiply
    30,847.68x = 42,582.24 × 18,907.20
  4. Step 4: Simplify right side
    30,847.68x = 805,110,928.13
  5. Step 5: Solve for x
    x = 805,110,928.13/30,847.68
  6. Step 6: Final answer
    x = 26,099.56

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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.