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Finding the Fourth Proportional to 23,435.31, 32,355.81 and 20,913.08

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Solution

The fourth proportional to 23,435.31, 32,355.81 and 20,913.08 is: 28,873.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,435.31 : 32,355.81 = 20,913.08 : x
  2. Step 2: Convert to fraction form
    23,435.31/32,355.81 = 20,913.08/x
  3. Step 3: Cross multiply
    23,435.31x = 32,355.81 × 20,913.08
  4. Step 4: Simplify right side
    23,435.31x = 676,659,741.64
  5. Step 5: Solve for x
    x = 676,659,741.64/23,435.31
  6. Step 6: Final answer
    x = 28,873.52

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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.