Home / 21,529.60-29,711.52-13,033.28

Finding the Fourth Proportional to 21,529.60, 29,711.52 and 13,033.28

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Solution

The fourth proportional to 21,529.60, 29,711.52 and 13,033.28 is: 17,986.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.60 : 29,711.52 = 13,033.28 : x
  2. Step 2: Convert to fraction form
    21,529.60/29,711.52 = 13,033.28/x
  3. Step 3: Cross multiply
    21,529.60x = 29,711.52 × 13,033.28
  4. Step 4: Simplify right side
    21,529.60x = 387,238,559.39
  5. Step 5: Solve for x
    x = 387,238,559.39/21,529.60
  6. Step 6: Final answer
    x = 17,986.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.