Home / 20,756.35-31,116.03-7,605.64

Finding the Fourth Proportional to 20,756.35, 31,116.03 and 7,605.64

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Solution

The fourth proportional to 20,756.35, 31,116.03 and 7,605.64 is: 11,401.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.35 : 31,116.03 = 7,605.64 : x
  2. Step 2: Convert to fraction form
    20,756.35/31,116.03 = 7,605.64/x
  3. Step 3: Cross multiply
    20,756.35x = 31,116.03 × 7,605.64
  4. Step 4: Simplify right side
    20,756.35x = 236,657,322.41
  5. Step 5: Solve for x
    x = 236,657,322.41/20,756.35
  6. Step 6: Final answer
    x = 11,401.68

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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.