Home / 31,146.70-42,980.74-16,999.24

Finding the Fourth Proportional to 31,146.70, 42,980.74 and 16,999.24

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Solution

The fourth proportional to 31,146.70, 42,980.74 and 16,999.24 is: 23,458.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,146.70 : 42,980.74 = 16,999.24 : x
  2. Step 2: Convert to fraction form
    31,146.70/42,980.74 = 16,999.24/x
  3. Step 3: Cross multiply
    31,146.70x = 42,980.74 × 16,999.24
  4. Step 4: Simplify right side
    31,146.70x = 730,639,914.64
  5. Step 5: Solve for x
    x = 730,639,914.64/31,146.70
  6. Step 6: Final answer
    x = 23,458.02

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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.