Home / 30,890.15-42,623.94-17,278.12

Finding the Fourth Proportional to 30,890.15, 42,623.94 and 17,278.12

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Solution

The fourth proportional to 30,890.15, 42,623.94 and 17,278.12 is: 23,841.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,890.15 : 42,623.94 = 17,278.12 : x
  2. Step 2: Convert to fraction form
    30,890.15/42,623.94 = 17,278.12/x
  3. Step 3: Cross multiply
    30,890.15x = 42,623.94 × 17,278.12
  4. Step 4: Simplify right side
    30,890.15x = 736,461,250.68
  5. Step 5: Solve for x
    x = 736,461,250.68/30,890.15
  6. Step 6: Final answer
    x = 23,841.30

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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.