Home / 21,432.32-29,574.96-11,999.60

Finding the Fourth Proportional to 21,432.32, 29,574.96 and 11,999.60

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Solution

The fourth proportional to 21,432.32, 29,574.96 and 11,999.60 is: 16,558.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.32 : 29,574.96 = 11,999.60 : x
  2. Step 2: Convert to fraction form
    21,432.32/29,574.96 = 11,999.60/x
  3. Step 3: Cross multiply
    21,432.32x = 29,574.96 × 11,999.60
  4. Step 4: Simplify right side
    21,432.32x = 354,887,690.02
  5. Step 5: Solve for x
    x = 354,887,690.02/21,432.32
  6. Step 6: Final answer
    x = 16,558.53

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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.