Home / 38,970.45-58,443.12-12,668.94

Finding the Fourth Proportional to 38,970.45, 58,443.12 and 12,668.94

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Solution

The fourth proportional to 38,970.45, 58,443.12 and 12,668.94 is: 18,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,970.45 : 58,443.12 = 12,668.94 : x
  2. Step 2: Convert to fraction form
    38,970.45/58,443.12 = 12,668.94/x
  3. Step 3: Cross multiply
    38,970.45x = 58,443.12 × 12,668.94
  4. Step 4: Simplify right side
    38,970.45x = 740,412,380.69
  5. Step 5: Solve for x
    x = 740,412,380.69/38,970.45
  6. Step 6: Final answer
    x = 18,999.33

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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.