Home / 21,655.47-29,884.71-12,703.15

Finding the Fourth Proportional to 21,655.47, 29,884.71 and 12,703.15

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Solution

The fourth proportional to 21,655.47, 29,884.71 and 12,703.15 is: 17,530.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655.47 : 29,884.71 = 12,703.15 : x
  2. Step 2: Convert to fraction form
    21,655.47/29,884.71 = 12,703.15/x
  3. Step 3: Cross multiply
    21,655.47x = 29,884.71 × 12,703.15
  4. Step 4: Simplify right side
    21,655.47x = 379,629,953.84
  5. Step 5: Solve for x
    x = 379,629,953.84/21,655.47
  6. Step 6: Final answer
    x = 17,530.44

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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.