Home / 14,645.40-21,953.70-13,090.20

Finding the Fourth Proportional to 14,645.40, 21,953.70 and 13,090.20

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Solution

The fourth proportional to 14,645.40, 21,953.70 and 13,090.20 is: 19,622.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,645.40 : 21,953.70 = 13,090.20 : x
  2. Step 2: Convert to fraction form
    14,645.40/21,953.70 = 13,090.20/x
  3. Step 3: Cross multiply
    14,645.40x = 21,953.70 × 13,090.20
  4. Step 4: Simplify right side
    14,645.40x = 287,378,323.74
  5. Step 5: Solve for x
    x = 287,378,323.74/14,645.40
  6. Step 6: Final answer
    x = 19,622.43

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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.