Home / 12,666.48-19,000.80-3,903.36

Finding the Fourth Proportional to 12,666.48, 19,000.80 and 3,903.36

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Solution

The fourth proportional to 12,666.48, 19,000.80 and 3,903.36 is: 5,855.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.48 : 19,000.80 = 3,903.36 : x
  2. Step 2: Convert to fraction form
    12,666.48/19,000.80 = 3,903.36/x
  3. Step 3: Cross multiply
    12,666.48x = 19,000.80 × 3,903.36
  4. Step 4: Simplify right side
    12,666.48x = 74,166,962.69
  5. Step 5: Solve for x
    x = 74,166,962.69/12,666.48
  6. Step 6: Final answer
    x = 5,855.37

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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.