Home / 21,966.36-30,315.72-12,536.32

Finding the Fourth Proportional to 21,966.36, 30,315.72 and 12,536.32

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Solution

The fourth proportional to 21,966.36, 30,315.72 and 12,536.32 is: 17,301.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.36 : 30,315.72 = 12,536.32 : x
  2. Step 2: Convert to fraction form
    21,966.36/30,315.72 = 12,536.32/x
  3. Step 3: Cross multiply
    21,966.36x = 30,315.72 × 12,536.32
  4. Step 4: Simplify right side
    21,966.36x = 380,047,566.95
  5. Step 5: Solve for x
    x = 380,047,566.95/21,966.36
  6. Step 6: Final answer
    x = 17,301.34

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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.