Home / 38,990.91-53,807.58-21,086.04

Finding the Fourth Proportional to 38,990.91, 53,807.58 and 21,086.04

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Solution

The fourth proportional to 38,990.91, 53,807.58 and 21,086.04 is: 29,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.91 : 53,807.58 = 21,086.04 : x
  2. Step 2: Convert to fraction form
    38,990.91/53,807.58 = 21,086.04/x
  3. Step 3: Cross multiply
    38,990.91x = 53,807.58 × 21,086.04
  4. Step 4: Simplify right side
    38,990.91x = 1,134,588,784.18
  5. Step 5: Solve for x
    x = 1,134,588,784.18/38,990.91
  6. Step 6: Final answer
    x = 29,098.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.