Home / 28,405.90-42,613.80-11,756.80

Finding the Fourth Proportional to 28,405.90, 42,613.80 and 11,756.80

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Solution

The fourth proportional to 28,405.90, 42,613.80 and 11,756.80 is: 17,637.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.90 : 42,613.80 = 11,756.80 : x
  2. Step 2: Convert to fraction form
    28,405.90/42,613.80 = 11,756.80/x
  3. Step 3: Cross multiply
    28,405.90x = 42,613.80 × 11,756.80
  4. Step 4: Simplify right side
    28,405.90x = 501,001,923.84
  5. Step 5: Solve for x
    x = 501,001,923.84/28,405.90
  6. Step 6: Final answer
    x = 17,637.25

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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.