Home / 38,784.08-58,176.12-12,490.88

Finding the Fourth Proportional to 38,784.08, 58,176.12 and 12,490.88

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Solution

The fourth proportional to 38,784.08, 58,176.12 and 12,490.88 is: 18,736.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,784.08 : 58,176.12 = 12,490.88 : x
  2. Step 2: Convert to fraction form
    38,784.08/58,176.12 = 12,490.88/x
  3. Step 3: Cross multiply
    38,784.08x = 58,176.12 × 12,490.88
  4. Step 4: Simplify right side
    38,784.08x = 726,670,933.79
  5. Step 5: Solve for x
    x = 726,670,933.79/38,784.08
  6. Step 6: Final answer
    x = 18,736.32

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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.