Home / 13,386.72-18,440.08-10,237.60

Finding the Fourth Proportional to 13,386.72, 18,440.08 and 10,237.60

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Solution

The fourth proportional to 13,386.72, 18,440.08 and 10,237.60 is: 14,102.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.72 : 18,440.08 = 10,237.60 : x
  2. Step 2: Convert to fraction form
    13,386.72/18,440.08 = 10,237.60/x
  3. Step 3: Cross multiply
    13,386.72x = 18,440.08 × 10,237.60
  4. Step 4: Simplify right side
    13,386.72x = 188,782,163.01
  5. Step 5: Solve for x
    x = 188,782,163.01/13,386.72
  6. Step 6: Final answer
    x = 14,102.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.