Home / 31,709.30-43,751.66-18,960.36

Finding the Fourth Proportional to 31,709.30, 43,751.66 and 18,960.36

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Solution

The fourth proportional to 31,709.30, 43,751.66 and 18,960.36 is: 26,161.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,709.30 : 43,751.66 = 18,960.36 : x
  2. Step 2: Convert to fraction form
    31,709.30/43,751.66 = 18,960.36/x
  3. Step 3: Cross multiply
    31,709.30x = 43,751.66 × 18,960.36
  4. Step 4: Simplify right side
    31,709.30x = 829,547,129.40
  5. Step 5: Solve for x
    x = 829,547,129.40/31,709.30
  6. Step 6: Final answer
    x = 26,161.01

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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.