Home / 20,984.42-28,959.45-12,031.22

Finding the Fourth Proportional to 20,984.42, 28,959.45 and 12,031.22

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Solution

The fourth proportional to 20,984.42, 28,959.45 and 12,031.22 is: 16,603.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.42 : 28,959.45 = 12,031.22 : x
  2. Step 2: Convert to fraction form
    20,984.42/28,959.45 = 12,031.22/x
  3. Step 3: Cross multiply
    20,984.42x = 28,959.45 × 12,031.22
  4. Step 4: Simplify right side
    20,984.42x = 348,417,514.03
  5. Step 5: Solve for x
    x = 348,417,514.03/20,984.42
  6. Step 6: Final answer
    x = 16,603.63

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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.