Home / 21,986.08-30,341.34-12,555.52

Finding the Fourth Proportional to 21,986.08, 30,341.34 and 12,555.52

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Solution

The fourth proportional to 21,986.08, 30,341.34 and 12,555.52 is: 17,326.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.08 : 30,341.34 = 12,555.52 : x
  2. Step 2: Convert to fraction form
    21,986.08/30,341.34 = 12,555.52/x
  3. Step 3: Cross multiply
    21,986.08x = 30,341.34 × 12,555.52
  4. Step 4: Simplify right side
    21,986.08x = 380,951,301.20
  5. Step 5: Solve for x
    x = 380,951,301.20/21,986.08
  6. Step 6: Final answer
    x = 17,326.93

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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.