Home / 30,873.04-42,561.16-21,917.27

Finding the Fourth Proportional to 30,873.04, 42,561.16 and 21,917.27

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Solution

The fourth proportional to 30,873.04, 42,561.16 and 21,917.27 is: 30,214.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,873.04 : 42,561.16 = 21,917.27 : x
  2. Step 2: Convert to fraction form
    30,873.04/42,561.16 = 21,917.27/x
  3. Step 3: Cross multiply
    30,873.04x = 42,561.16 × 21,917.27
  4. Step 4: Simplify right side
    30,873.04x = 932,824,435.23
  5. Step 5: Solve for x
    x = 932,824,435.23/30,873.04
  6. Step 6: Final answer
    x = 30,214.86

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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.