Home / 30,507.44-42,103.80-18,577.76

Finding the Fourth Proportional to 30,507.44, 42,103.80 and 18,577.76

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Solution

The fourth proportional to 30,507.44, 42,103.80 and 18,577.76 is: 25,639.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,507.44 : 42,103.80 = 18,577.76 : x
  2. Step 2: Convert to fraction form
    30,507.44/42,103.80 = 18,577.76/x
  3. Step 3: Cross multiply
    30,507.44x = 42,103.80 × 18,577.76
  4. Step 4: Simplify right side
    30,507.44x = 782,194,080.97
  5. Step 5: Solve for x
    x = 782,194,080.97/30,507.44
  6. Step 6: Final answer
    x = 25,639.46

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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.