Home / 31,145.41-42,980.63-16,998.26

Finding the Fourth Proportional to 31,145.41, 42,980.63 and 16,998.26

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Solution

The fourth proportional to 31,145.41, 42,980.63 and 16,998.26 is: 23,457.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,145.41 : 42,980.63 = 16,998.26 : x
  2. Step 2: Convert to fraction form
    31,145.41/42,980.63 = 16,998.26/x
  3. Step 3: Cross multiply
    31,145.41x = 42,980.63 × 16,998.26
  4. Step 4: Simplify right side
    31,145.41x = 730,595,623.81
  5. Step 5: Solve for x
    x = 730,595,623.81/31,145.41
  6. Step 6: Final answer
    x = 23,457.57

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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.