Home / 13,330.20-19,985.70-7,488.60

Finding the Fourth Proportional to 13,330.20, 19,985.70 and 7,488.60

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Solution

The fourth proportional to 13,330.20, 19,985.70 and 7,488.60 is: 11,227.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.20 : 19,985.70 = 7,488.60 : x
  2. Step 2: Convert to fraction form
    13,330.20/19,985.70 = 7,488.60/x
  3. Step 3: Cross multiply
    13,330.20x = 19,985.70 × 7,488.60
  4. Step 4: Simplify right side
    13,330.20x = 149,664,913.02
  5. Step 5: Solve for x
    x = 149,664,913.02/13,330.20
  6. Step 6: Final answer
    x = 11,227.51

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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.