Home / 21,700.42-29,948.80-13,203.14

Finding the Fourth Proportional to 21,700.42, 29,948.80 and 13,203.14

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Solution

The fourth proportional to 21,700.42, 29,948.80 and 13,203.14 is: 18,221.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.42 : 29,948.80 = 13,203.14 : x
  2. Step 2: Convert to fraction form
    21,700.42/29,948.80 = 13,203.14/x
  3. Step 3: Cross multiply
    21,700.42x = 29,948.80 × 13,203.14
  4. Step 4: Simplify right side
    21,700.42x = 395,418,199.23
  5. Step 5: Solve for x
    x = 395,418,199.23/21,700.42
  6. Step 6: Final answer
    x = 18,221.68

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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.