Home / 30,905.01-42,643.22-18,160.27

Finding the Fourth Proportional to 30,905.01, 42,643.22 and 18,160.27

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Solution

The fourth proportional to 30,905.01, 42,643.22 and 18,160.27 is: 25,057.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.01 : 42,643.22 = 18,160.27 : x
  2. Step 2: Convert to fraction form
    30,905.01/42,643.22 = 18,160.27/x
  3. Step 3: Cross multiply
    30,905.01x = 42,643.22 × 18,160.27
  4. Step 4: Simplify right side
    30,905.01x = 774,412,419.47
  5. Step 5: Solve for x
    x = 774,412,419.47/30,905.01
  6. Step 6: Final answer
    x = 25,057.82

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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.