Home / 38,664.80-58,056.60-21,168.80

Finding the Fourth Proportional to 38,664.80, 58,056.60 and 21,168.80

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Solution

The fourth proportional to 38,664.80, 58,056.60 and 21,168.80 is: 31,785.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,664.80 : 58,056.60 = 21,168.80 : x
  2. Step 2: Convert to fraction form
    38,664.80/58,056.60 = 21,168.80/x
  3. Step 3: Cross multiply
    38,664.80x = 58,056.60 × 21,168.80
  4. Step 4: Simplify right side
    38,664.80x = 1,228,988,554.08
  5. Step 5: Solve for x
    x = 1,228,988,554.08/38,664.80
  6. Step 6: Final answer
    x = 31,785.72

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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.