Home / 12,290.09-16,905.53-10,770.12

Finding the Fourth Proportional to 12,290.09, 16,905.53 and 10,770.12

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Solution

The fourth proportional to 12,290.09, 16,905.53 and 10,770.12 is: 14,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.09 : 16,905.53 = 10,770.12 : x
  2. Step 2: Convert to fraction form
    12,290.09/16,905.53 = 10,770.12/x
  3. Step 3: Cross multiply
    12,290.09x = 16,905.53 × 10,770.12
  4. Step 4: Simplify right side
    12,290.09x = 182,074,532.91
  5. Step 5: Solve for x
    x = 182,074,532.91/12,290.09
  6. Step 6: Final answer
    x = 14,814.75

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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.