Home / 20,459.42-28,231.08-11,506.58

Finding the Fourth Proportional to 20,459.42, 28,231.08 and 11,506.58

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Solution

The fourth proportional to 20,459.42, 28,231.08 and 11,506.58 is: 15,877.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.42 : 28,231.08 = 11,506.58 : x
  2. Step 2: Convert to fraction form
    20,459.42/28,231.08 = 11,506.58/x
  3. Step 3: Cross multiply
    20,459.42x = 28,231.08 × 11,506.58
  4. Step 4: Simplify right side
    20,459.42x = 324,843,180.51
  5. Step 5: Solve for x
    x = 324,843,180.51/20,459.42
  6. Step 6: Final answer
    x = 15,877.44

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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.