Home / 19,421.84-29,133.68-6,947.78

Finding the Fourth Proportional to 19,421.84, 29,133.68 and 6,947.78

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Solution

The fourth proportional to 19,421.84, 29,133.68 and 6,947.78 is: 10,421.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.84 : 29,133.68 = 6,947.78 : x
  2. Step 2: Convert to fraction form
    19,421.84/29,133.68 = 6,947.78/x
  3. Step 3: Cross multiply
    19,421.84x = 29,133.68 × 6,947.78
  4. Step 4: Simplify right side
    19,421.84x = 202,414,218.82
  5. Step 5: Solve for x
    x = 202,414,218.82/19,421.84
  6. Step 6: Final answer
    x = 10,421.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.