Home / 30,579.40-45,867.54-8,391.16

Finding the Fourth Proportional to 30,579.40, 45,867.54 and 8,391.16

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Solution

The fourth proportional to 30,579.40, 45,867.54 and 8,391.16 is: 12,586.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.40 : 45,867.54 = 8,391.16 : x
  2. Step 2: Convert to fraction form
    30,579.40/45,867.54 = 8,391.16/x
  3. Step 3: Cross multiply
    30,579.40x = 45,867.54 × 8,391.16
  4. Step 4: Simplify right side
    30,579.40x = 384,881,866.95
  5. Step 5: Solve for x
    x = 384,881,866.95/30,579.40
  6. Step 6: Final answer
    x = 12,586.31

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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.