Home / 21,070.44-31,605.65-6,278.98

Finding the Fourth Proportional to 21,070.44, 31,605.65 and 6,278.98

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Solution

The fourth proportional to 21,070.44, 31,605.65 and 6,278.98 is: 9,418.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.44 : 31,605.65 = 6,278.98 : x
  2. Step 2: Convert to fraction form
    21,070.44/31,605.65 = 6,278.98/x
  3. Step 3: Cross multiply
    21,070.44x = 31,605.65 × 6,278.98
  4. Step 4: Simplify right side
    21,070.44x = 198,451,133.83
  5. Step 5: Solve for x
    x = 198,451,133.83/21,070.44
  6. Step 6: Final answer
    x = 9,418.46

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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.