Home / 21,409.56-29,558.10-13,970.52

Finding the Fourth Proportional to 21,409.56, 29,558.10 and 13,970.52

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Solution

The fourth proportional to 21,409.56, 29,558.10 and 13,970.52 is: 19,287.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.56 : 29,558.10 = 13,970.52 : x
  2. Step 2: Convert to fraction form
    21,409.56/29,558.10 = 13,970.52/x
  3. Step 3: Cross multiply
    21,409.56x = 29,558.10 × 13,970.52
  4. Step 4: Simplify right side
    21,409.56x = 412,942,027.21
  5. Step 5: Solve for x
    x = 412,942,027.21/21,409.56
  6. Step 6: Final answer
    x = 19,287.74

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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.