Home / 21,031.41-29,023.29-12,079.49

Finding the Fourth Proportional to 21,031.41, 29,023.29 and 12,079.49

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Solution

The fourth proportional to 21,031.41, 29,023.29 and 12,079.49 is: 16,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.41 : 29,023.29 = 12,079.49 : x
  2. Step 2: Convert to fraction form
    21,031.41/29,023.29 = 12,079.49/x
  3. Step 3: Cross multiply
    21,031.41x = 29,023.29 × 12,079.49
  4. Step 4: Simplify right side
    21,031.41x = 350,586,613.88
  5. Step 5: Solve for x
    x = 350,586,613.88/21,031.41
  6. Step 6: Final answer
    x = 16,669.67

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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.