Home / 31,119.66-42,943.83-16,971.66

Finding the Fourth Proportional to 31,119.66, 42,943.83 and 16,971.66

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Solution

The fourth proportional to 31,119.66, 42,943.83 and 16,971.66 is: 23,420.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,119.66 : 42,943.83 = 16,971.66 : x
  2. Step 2: Convert to fraction form
    31,119.66/42,943.83 = 16,971.66/x
  3. Step 3: Cross multiply
    31,119.66x = 42,943.83 × 16,971.66
  4. Step 4: Simplify right side
    31,119.66x = 728,828,081.86
  5. Step 5: Solve for x
    x = 728,828,081.86/31,119.66
  6. Step 6: Final answer
    x = 23,420.18

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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.