Home / 19,980.24-29,985.32-7,512.56

Finding the Fourth Proportional to 19,980.24, 29,985.32 and 7,512.56

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Solution

The fourth proportional to 19,980.24, 29,985.32 and 7,512.56 is: 11,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.24 : 29,985.32 = 7,512.56 : x
  2. Step 2: Convert to fraction form
    19,980.24/29,985.32 = 7,512.56/x
  3. Step 3: Cross multiply
    19,980.24x = 29,985.32 × 7,512.56
  4. Step 4: Simplify right side
    19,980.24x = 225,266,515.62
  5. Step 5: Solve for x
    x = 225,266,515.62/19,980.24
  6. Step 6: Final answer
    x = 11,274.46

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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.