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Finding the Fourth Proportional to 14,205.68, 19,603.86 and 7,917.92

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Solution

The fourth proportional to 14,205.68, 19,603.86 and 7,917.92 is: 10,926.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,205.68 : 19,603.86 = 7,917.92 : x
  2. Step 2: Convert to fraction form
    14,205.68/19,603.86 = 7,917.92/x
  3. Step 3: Cross multiply
    14,205.68x = 19,603.86 × 7,917.92
  4. Step 4: Simplify right side
    14,205.68x = 155,221,795.17
  5. Step 5: Solve for x
    x = 155,221,795.17/14,205.68
  6. Step 6: Final answer
    x = 10,926.74

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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.