Home / 31,127.13-42,955.75-16,980.27

Finding the Fourth Proportional to 31,127.13, 42,955.75 and 16,980.27

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Solution

The fourth proportional to 31,127.13, 42,955.75 and 16,980.27 is: 23,432.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,127.13 : 42,955.75 = 16,980.27 : x
  2. Step 2: Convert to fraction form
    31,127.13/42,955.75 = 16,980.27/x
  3. Step 3: Cross multiply
    31,127.13x = 42,955.75 × 16,980.27
  4. Step 4: Simplify right side
    31,127.13x = 729,400,233.05
  5. Step 5: Solve for x
    x = 729,400,233.05/31,127.13
  6. Step 6: Final answer
    x = 23,432.94

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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.