Home / 21,014.64-28,999.65-11,583.24

Finding the Fourth Proportional to 21,014.64, 28,999.65 and 11,583.24

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Solution

The fourth proportional to 21,014.64, 28,999.65 and 11,583.24 is: 15,984.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.64 : 28,999.65 = 11,583.24 : x
  2. Step 2: Convert to fraction form
    21,014.64/28,999.65 = 11,583.24/x
  3. Step 3: Cross multiply
    21,014.64x = 28,999.65 × 11,583.24
  4. Step 4: Simplify right side
    21,014.64x = 335,909,905.87
  5. Step 5: Solve for x
    x = 335,909,905.87/21,014.64
  6. Step 6: Final answer
    x = 15,984.57

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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.