Home / 21,966.09-30,315.38-12,536.07

Finding the Fourth Proportional to 21,966.09, 30,315.38 and 12,536.07

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Solution

The fourth proportional to 21,966.09, 30,315.38 and 12,536.07 is: 17,301.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.09 : 30,315.38 = 12,536.07 : x
  2. Step 2: Convert to fraction form
    21,966.09/30,315.38 = 12,536.07/x
  3. Step 3: Cross multiply
    21,966.09x = 30,315.38 × 12,536.07
  4. Step 4: Simplify right side
    21,966.09x = 380,035,663.08
  5. Step 5: Solve for x
    x = 380,035,663.08/21,966.09
  6. Step 6: Final answer
    x = 17,301.02

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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.