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Finding the Fourth Proportional to 29,458.64, 40,602.12 and 21,786.32

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Solution

The fourth proportional to 29,458.64, 40,602.12 and 21,786.32 is: 30,027.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,458.64 : 40,602.12 = 21,786.32 : x
  2. Step 2: Convert to fraction form
    29,458.64/40,602.12 = 21,786.32/x
  3. Step 3: Cross multiply
    29,458.64x = 40,602.12 × 21,786.32
  4. Step 4: Simplify right side
    29,458.64x = 884,570,779.00
  5. Step 5: Solve for x
    x = 884,570,779.00/29,458.64
  6. Step 6: Final answer
    x = 30,027.55

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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.