Home / 28,260.20-42,389.18-7,200.36

Finding the Fourth Proportional to 28,260.20, 42,389.18 and 7,200.36

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Solution

The fourth proportional to 28,260.20, 42,389.18 and 7,200.36 is: 10,800.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.20 : 42,389.18 = 7,200.36 : x
  2. Step 2: Convert to fraction form
    28,260.20/42,389.18 = 7,200.36/x
  3. Step 3: Cross multiply
    28,260.20x = 42,389.18 × 7,200.36
  4. Step 4: Simplify right side
    28,260.20x = 305,217,356.10
  5. Step 5: Solve for x
    x = 305,217,356.10/28,260.20
  6. Step 6: Final answer
    x = 10,800.25

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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.