Home / 30,518.10-42,115.07-17,089.58

Finding the Fourth Proportional to 30,518.10, 42,115.07 and 17,089.58

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Solution

The fourth proportional to 30,518.10, 42,115.07 and 17,089.58 is: 23,583.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,518.10 : 42,115.07 = 17,089.58 : x
  2. Step 2: Convert to fraction form
    30,518.10/42,115.07 = 17,089.58/x
  3. Step 3: Cross multiply
    30,518.10x = 42,115.07 × 17,089.58
  4. Step 4: Simplify right side
    30,518.10x = 719,729,005.98
  5. Step 5: Solve for x
    x = 719,729,005.98/30,518.10
  6. Step 6: Final answer
    x = 23,583.68

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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.