Home / 21,741.10-30,002.88-12,309.46

Finding the Fourth Proportional to 21,741.10, 30,002.88 and 12,309.46

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Solution

The fourth proportional to 21,741.10, 30,002.88 and 12,309.46 is: 16,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,741.10 : 30,002.88 = 12,309.46 : x
  2. Step 2: Convert to fraction form
    21,741.10/30,002.88 = 12,309.46/x
  3. Step 3: Cross multiply
    21,741.10x = 30,002.88 × 12,309.46
  4. Step 4: Simplify right side
    21,741.10x = 369,319,251.24
  5. Step 5: Solve for x
    x = 369,319,251.24/21,741.10
  6. Step 6: Final answer
    x = 16,987.15

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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.