Home / 19,636.58-29,437.30-7,147.80

Finding the Fourth Proportional to 19,636.58, 29,437.30 and 7,147.80

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Solution

The fourth proportional to 19,636.58, 29,437.30 and 7,147.80 is: 10,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,636.58 : 29,437.30 = 7,147.80 : x
  2. Step 2: Convert to fraction form
    19,636.58/29,437.30 = 7,147.80/x
  3. Step 3: Cross multiply
    19,636.58x = 29,437.30 × 7,147.80
  4. Step 4: Simplify right side
    19,636.58x = 210,411,932.94
  5. Step 5: Solve for x
    x = 210,411,932.94/19,636.58
  6. Step 6: Final answer
    x = 10,715.30

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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.