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Finding the Fourth Proportional to 18,899.16, 26,082.12 and 12,514.74

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Solution

The fourth proportional to 18,899.16, 26,082.12 and 12,514.74 is: 17,271.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.16 : 26,082.12 = 12,514.74 : x
  2. Step 2: Convert to fraction form
    18,899.16/26,082.12 = 12,514.74/x
  3. Step 3: Cross multiply
    18,899.16x = 26,082.12 × 12,514.74
  4. Step 4: Simplify right side
    18,899.16x = 326,410,950.45
  5. Step 5: Solve for x
    x = 326,410,950.45/18,899.16
  6. Step 6: Final answer
    x = 17,271.19

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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.