Home / 21,364.47-29,497.55-13,829.04

Finding the Fourth Proportional to 21,364.47, 29,497.55 and 13,829.04

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Solution

The fourth proportional to 21,364.47, 29,497.55 and 13,829.04 is: 19,093.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,364.47 : 29,497.55 = 13,829.04 : x
  2. Step 2: Convert to fraction form
    21,364.47/29,497.55 = 13,829.04/x
  3. Step 3: Cross multiply
    21,364.47x = 29,497.55 × 13,829.04
  4. Step 4: Simplify right side
    21,364.47x = 407,922,729.71
  5. Step 5: Solve for x
    x = 407,922,729.71/21,364.47
  6. Step 6: Final answer
    x = 19,093.51

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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.