Home / 28,490.34-42,735.54-7,430.36

Finding the Fourth Proportional to 28,490.34, 42,735.54 and 7,430.36

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Solution

The fourth proportional to 28,490.34, 42,735.54 and 7,430.36 is: 11,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.34 : 42,735.54 = 7,430.36 : x
  2. Step 2: Convert to fraction form
    28,490.34/42,735.54 = 7,430.36/x
  3. Step 3: Cross multiply
    28,490.34x = 42,735.54 × 7,430.36
  4. Step 4: Simplify right side
    28,490.34x = 317,540,446.99
  5. Step 5: Solve for x
    x = 317,540,446.99/28,490.34
  6. Step 6: Final answer
    x = 11,145.55

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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.