Home / 13,985.27-20,970.68-4,123.29

Finding the Fourth Proportional to 13,985.27, 20,970.68 and 4,123.29

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Solution

The fourth proportional to 13,985.27, 20,970.68 and 4,123.29 is: 6,182.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.27 : 20,970.68 = 4,123.29 : x
  2. Step 2: Convert to fraction form
    13,985.27/20,970.68 = 4,123.29/x
  3. Step 3: Cross multiply
    13,985.27x = 20,970.68 × 4,123.29
  4. Step 4: Simplify right side
    13,985.27x = 86,468,174.52
  5. Step 5: Solve for x
    x = 86,468,174.52/13,985.27
  6. Step 6: Final answer
    x = 6,182.81

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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.