Home / 30,555.99-42,157.80-17,125.38

Finding the Fourth Proportional to 30,555.99, 42,157.80 and 17,125.38

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Solution

The fourth proportional to 30,555.99, 42,157.80 and 17,125.38 is: 23,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,555.99 : 42,157.80 = 17,125.38 : x
  2. Step 2: Convert to fraction form
    30,555.99/42,157.80 = 17,125.38/x
  3. Step 3: Cross multiply
    30,555.99x = 42,157.80 × 17,125.38
  4. Step 4: Simplify right side
    30,555.99x = 721,968,344.96
  5. Step 5: Solve for x
    x = 721,968,344.96/30,555.99
  6. Step 6: Final answer
    x = 23,627.72

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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.