Home / 30,835.42-42,553.65-18,905.33

Finding the Fourth Proportional to 30,835.42, 42,553.65 and 18,905.33

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Solution

The fourth proportional to 30,835.42, 42,553.65 and 18,905.33 is: 26,089.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,835.42 : 42,553.65 = 18,905.33 : x
  2. Step 2: Convert to fraction form
    30,835.42/42,553.65 = 18,905.33/x
  3. Step 3: Cross multiply
    30,835.42x = 42,553.65 × 18,905.33
  4. Step 4: Simplify right side
    30,835.42x = 804,490,973.23
  5. Step 5: Solve for x
    x = 804,490,973.23/30,835.42
  6. Step 6: Final answer
    x = 26,089.84

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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.