Home / 20,750.12-31,118.52-6,707.15

Finding the Fourth Proportional to 20,750.12, 31,118.52 and 6,707.15

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Solution

The fourth proportional to 20,750.12, 31,118.52 and 6,707.15 is: 10,058.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.12 : 31,118.52 = 6,707.15 : x
  2. Step 2: Convert to fraction form
    20,750.12/31,118.52 = 6,707.15/x
  3. Step 3: Cross multiply
    20,750.12x = 31,118.52 × 6,707.15
  4. Step 4: Simplify right side
    20,750.12x = 208,716,425.83
  5. Step 5: Solve for x
    x = 208,716,425.83/20,750.12
  6. Step 6: Final answer
    x = 10,058.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.