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Finding the Fourth Proportional to 14,354.38, 19,808.08 and 7,980.47

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Solution

The fourth proportional to 14,354.38, 19,808.08 and 7,980.47 is: 11,012.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,354.38 : 19,808.08 = 7,980.47 : x
  2. Step 2: Convert to fraction form
    14,354.38/19,808.08 = 7,980.47/x
  3. Step 3: Cross multiply
    14,354.38x = 19,808.08 × 7,980.47
  4. Step 4: Simplify right side
    14,354.38x = 158,077,788.20
  5. Step 5: Solve for x
    x = 158,077,788.20/14,354.38
  6. Step 6: Final answer
    x = 11,012.51

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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.