Home / 30,441.28-42,037.68-28,784.56

Finding the Fourth Proportional to 30,441.28, 42,037.68 and 28,784.56

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Solution

The fourth proportional to 30,441.28, 42,037.68 and 28,784.56 is: 39,749.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,441.28 : 42,037.68 = 28,784.56 : x
  2. Step 2: Convert to fraction form
    30,441.28/42,037.68 = 28,784.56/x
  3. Step 3: Cross multiply
    30,441.28x = 42,037.68 × 28,784.56
  4. Step 4: Simplify right side
    30,441.28x = 1,210,036,122.22
  5. Step 5: Solve for x
    x = 1,210,036,122.22/30,441.28
  6. Step 6: Final answer
    x = 39,749.84

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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.