Home / 13,021.60-19,530.40-4,256.56

Finding the Fourth Proportional to 13,021.60, 19,530.40 and 4,256.56

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Solution

The fourth proportional to 13,021.60, 19,530.40 and 4,256.56 is: 6,384.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.60 : 19,530.40 = 4,256.56 : x
  2. Step 2: Convert to fraction form
    13,021.60/19,530.40 = 4,256.56/x
  3. Step 3: Cross multiply
    13,021.60x = 19,530.40 × 4,256.56
  4. Step 4: Simplify right side
    13,021.60x = 83,132,319.42
  5. Step 5: Solve for x
    x = 83,132,319.42/13,021.60
  6. Step 6: Final answer
    x = 6,384.19

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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.