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Finding the Fourth Proportional to 28,373.28, 42,559.44 and 7,313.28

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Solution

The fourth proportional to 28,373.28, 42,559.44 and 7,313.28 is: 10,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,373.28 : 42,559.44 = 7,313.28 : x
  2. Step 2: Convert to fraction form
    28,373.28/42,559.44 = 7,313.28/x
  3. Step 3: Cross multiply
    28,373.28x = 42,559.44 × 7,313.28
  4. Step 4: Simplify right side
    28,373.28x = 311,249,101.36
  5. Step 5: Solve for x
    x = 311,249,101.36/28,373.28
  6. Step 6: Final answer
    x = 10,969.80

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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.