Home / 21,740.51-30,001.04-12,309.07

Finding the Fourth Proportional to 21,740.51, 30,001.04 and 12,309.07

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Solution

The fourth proportional to 21,740.51, 30,001.04 and 12,309.07 is: 16,986.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.51 : 30,001.04 = 12,309.07 : x
  2. Step 2: Convert to fraction form
    21,740.51/30,001.04 = 12,309.07/x
  3. Step 3: Cross multiply
    21,740.51x = 30,001.04 × 12,309.07
  4. Step 4: Simplify right side
    21,740.51x = 369,284,689.88
  5. Step 5: Solve for x
    x = 369,284,689.88/21,740.51
  6. Step 6: Final answer
    x = 16,986.02

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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.