Home / 19,115.61-28,672.91-5,075.69

Finding the Fourth Proportional to 19,115.61, 28,672.91 and 5,075.69

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Solution

The fourth proportional to 19,115.61, 28,672.91 and 5,075.69 is: 7,613.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.61 : 28,672.91 = 5,075.69 : x
  2. Step 2: Convert to fraction form
    19,115.61/28,672.91 = 5,075.69/x
  3. Step 3: Cross multiply
    19,115.61x = 28,672.91 × 5,075.69
  4. Step 4: Simplify right side
    19,115.61x = 145,534,633.81
  5. Step 5: Solve for x
    x = 145,534,633.81/19,115.61
  6. Step 6: Final answer
    x = 7,613.39

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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.