Home / 31,119.41-42,944.55-16,971.95

Finding the Fourth Proportional to 31,119.41, 42,944.55 and 16,971.95

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Solution

The fourth proportional to 31,119.41, 42,944.55 and 16,971.95 is: 23,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,119.41 : 42,944.55 = 16,971.95 : x
  2. Step 2: Convert to fraction form
    31,119.41/42,944.55 = 16,971.95/x
  3. Step 3: Cross multiply
    31,119.41x = 42,944.55 × 16,971.95
  4. Step 4: Simplify right side
    31,119.41x = 728,852,755.37
  5. Step 5: Solve for x
    x = 728,852,755.37/31,119.41
  6. Step 6: Final answer
    x = 23,421.16

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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.