Home / 13,588.74-20,386.04-4,228.58

Finding the Fourth Proportional to 13,588.74, 20,386.04 and 4,228.58

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Solution

The fourth proportional to 13,588.74, 20,386.04 and 4,228.58 is: 6,343.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.74 : 20,386.04 = 4,228.58 : x
  2. Step 2: Convert to fraction form
    13,588.74/20,386.04 = 4,228.58/x
  3. Step 3: Cross multiply
    13,588.74x = 20,386.04 × 4,228.58
  4. Step 4: Simplify right side
    13,588.74x = 86,204,001.02
  5. Step 5: Solve for x
    x = 86,204,001.02/13,588.74
  6. Step 6: Final answer
    x = 6,343.78

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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.