Home / 20,868.58-31,308-6,077.63

Finding the Fourth Proportional to 20,868.58, 31,308 and 6,077.63

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Solution

The fourth proportional to 20,868.58, 31,308 and 6,077.63 is: 9,117.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.58 : 31,308 = 6,077.63 : x
  2. Step 2: Convert to fraction form
    20,868.58/31,308 = 6,077.63/x
  3. Step 3: Cross multiply
    20,868.58x = 31,308 × 6,077.63
  4. Step 4: Simplify right side
    20,868.58x = 190,278,518.31
  5. Step 5: Solve for x
    x = 190,278,518.31/20,868.58
  6. Step 6: Final answer
    x = 9,117.94

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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.