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Finding the Fourth Proportional to 12,354.93, 17,051.11 and 7,320.78

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Solution

The fourth proportional to 12,354.93, 17,051.11 and 7,320.78 is: 10,103.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,354.93 : 17,051.11 = 7,320.78 : x
  2. Step 2: Convert to fraction form
    12,354.93/17,051.11 = 7,320.78/x
  3. Step 3: Cross multiply
    12,354.93x = 17,051.11 × 7,320.78
  4. Step 4: Simplify right side
    12,354.93x = 124,827,406.76
  5. Step 5: Solve for x
    x = 124,827,406.76/12,354.93
  6. Step 6: Final answer
    x = 10,103.45

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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.