Home / 21,470.37-29,629.28-11,779.76

Finding the Fourth Proportional to 21,470.37, 29,629.28 and 11,779.76

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Solution

The fourth proportional to 21,470.37, 29,629.28 and 11,779.76 is: 16,256.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.37 : 29,629.28 = 11,779.76 : x
  2. Step 2: Convert to fraction form
    21,470.37/29,629.28 = 11,779.76/x
  3. Step 3: Cross multiply
    21,470.37x = 29,629.28 × 11,779.76
  4. Step 4: Simplify right side
    21,470.37x = 349,025,844.63
  5. Step 5: Solve for x
    x = 349,025,844.63/21,470.37
  6. Step 6: Final answer
    x = 16,256.16

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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.