Home / 13,423.19-20,142.03-7,887.35

Finding the Fourth Proportional to 13,423.19, 20,142.03 and 7,887.35

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Solution

The fourth proportional to 13,423.19, 20,142.03 and 7,887.35 is: 11,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.19 : 20,142.03 = 7,887.35 : x
  2. Step 2: Convert to fraction form
    13,423.19/20,142.03 = 7,887.35/x
  3. Step 3: Cross multiply
    13,423.19x = 20,142.03 × 7,887.35
  4. Step 4: Simplify right side
    13,423.19x = 158,867,240.32
  5. Step 5: Solve for x
    x = 158,867,240.32/13,423.19
  6. Step 6: Final answer
    x = 11,835.28

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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.