Home / 31,145.24-42,980.42-16,998.08

Finding the Fourth Proportional to 31,145.24, 42,980.42 and 16,998.08

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Solution

The fourth proportional to 31,145.24, 42,980.42 and 16,998.08 is: 23,457.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,145.24 : 42,980.42 = 16,998.08 : x
  2. Step 2: Convert to fraction form
    31,145.24/42,980.42 = 16,998.08/x
  3. Step 3: Cross multiply
    31,145.24x = 42,980.42 × 16,998.08
  4. Step 4: Simplify right side
    31,145.24x = 730,584,317.70
  5. Step 5: Solve for x
    x = 730,584,317.70/31,145.24
  6. Step 6: Final answer
    x = 23,457.34

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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.