Home / 21,417.42-29,556.15-11,985.39

Finding the Fourth Proportional to 21,417.42, 29,556.15 and 11,985.39

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Solution

The fourth proportional to 21,417.42, 29,556.15 and 11,985.39 is: 16,539.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.42 : 29,556.15 = 11,985.39 : x
  2. Step 2: Convert to fraction form
    21,417.42/29,556.15 = 11,985.39/x
  3. Step 3: Cross multiply
    21,417.42x = 29,556.15 × 11,985.39
  4. Step 4: Simplify right side
    21,417.42x = 354,241,984.65
  5. Step 5: Solve for x
    x = 354,241,984.65/21,417.42
  6. Step 6: Final answer
    x = 16,539.90

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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.