Home / 21,528.04-29,708.48-11,967.68

Finding the Fourth Proportional to 21,528.04, 29,708.48 and 11,967.68

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Solution

The fourth proportional to 21,528.04, 29,708.48 and 11,967.68 is: 16,515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.04 : 29,708.48 = 11,967.68 : x
  2. Step 2: Convert to fraction form
    21,528.04/29,708.48 = 11,967.68/x
  3. Step 3: Cross multiply
    21,528.04x = 29,708.48 × 11,967.68
  4. Step 4: Simplify right side
    21,528.04x = 355,541,581.93
  5. Step 5: Solve for x
    x = 355,541,581.93/21,528.04
  6. Step 6: Final answer
    x = 16,515.28

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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.