Home / 38,670.80-58,006.20-12,376.40

Finding the Fourth Proportional to 38,670.80, 58,006.20 and 12,376.40

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Solution

The fourth proportional to 38,670.80, 58,006.20 and 12,376.40 is: 18,564.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,670.80 : 58,006.20 = 12,376.40 : x
  2. Step 2: Convert to fraction form
    38,670.80/58,006.20 = 12,376.40/x
  3. Step 3: Cross multiply
    38,670.80x = 58,006.20 × 12,376.40
  4. Step 4: Simplify right side
    38,670.80x = 717,907,933.68
  5. Step 5: Solve for x
    x = 717,907,933.68/38,670.80
  6. Step 6: Final answer
    x = 18,564.60

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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.