Home / 21,514.32-29,688.30-12,082.68

Finding the Fourth Proportional to 21,514.32, 29,688.30 and 12,082.68

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Solution

The fourth proportional to 21,514.32, 29,688.30 and 12,082.68 is: 16,673.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,514.32 : 29,688.30 = 12,082.68 : x
  2. Step 2: Convert to fraction form
    21,514.32/29,688.30 = 12,082.68/x
  3. Step 3: Cross multiply
    21,514.32x = 29,688.30 × 12,082.68
  4. Step 4: Simplify right side
    21,514.32x = 358,714,228.64
  5. Step 5: Solve for x
    x = 358,714,228.64/21,514.32
  6. Step 6: Final answer
    x = 16,673.28

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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.