Home / 28,490.15-42,735.26-7,430.18

Finding the Fourth Proportional to 28,490.15, 42,735.26 and 7,430.18

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Solution

The fourth proportional to 28,490.15, 42,735.26 and 7,430.18 is: 11,145.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.15 : 42,735.26 = 7,430.18 : x
  2. Step 2: Convert to fraction form
    28,490.15/42,735.26 = 7,430.18/x
  3. Step 3: Cross multiply
    28,490.15x = 42,735.26 × 7,430.18
  4. Step 4: Simplify right side
    28,490.15x = 317,530,423.32
  5. Step 5: Solve for x
    x = 317,530,423.32/28,490.15
  6. Step 6: Final answer
    x = 11,145.27

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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.