Home / 13,264.40-19,889.75-3,903.20

Finding the Fourth Proportional to 13,264.40, 19,889.75 and 3,903.20

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Solution

The fourth proportional to 13,264.40, 19,889.75 and 3,903.20 is: 5,852.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,264.40 : 19,889.75 = 3,903.20 : x
  2. Step 2: Convert to fraction form
    13,264.40/19,889.75 = 3,903.20/x
  3. Step 3: Cross multiply
    13,264.40x = 19,889.75 × 3,903.20
  4. Step 4: Simplify right side
    13,264.40x = 77,633,597.43
  5. Step 5: Solve for x
    x = 77,633,597.43/13,264.40
  6. Step 6: Final answer
    x = 5,852.78

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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.