Home / 21,140.16-29,174.34-11,708.72

Finding the Fourth Proportional to 21,140.16, 29,174.34 and 11,708.72

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Solution

The fourth proportional to 21,140.16, 29,174.34 and 11,708.72 is: 16,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.16 : 29,174.34 = 11,708.72 : x
  2. Step 2: Convert to fraction form
    21,140.16/29,174.34 = 11,708.72/x
  3. Step 3: Cross multiply
    21,140.16x = 29,174.34 × 11,708.72
  4. Step 4: Simplify right side
    21,140.16x = 341,594,032.37
  5. Step 5: Solve for x
    x = 341,594,032.37/21,140.16
  6. Step 6: Final answer
    x = 16,158.54

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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.