Home / 42,780.84-64,174.50-11,616.36

Finding the Fourth Proportional to 42,780.84, 64,174.50 and 11,616.36

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Solution

The fourth proportional to 42,780.84, 64,174.50 and 11,616.36 is: 17,425.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,780.84 : 64,174.50 = 11,616.36 : x
  2. Step 2: Convert to fraction form
    42,780.84/64,174.50 = 11,616.36/x
  3. Step 3: Cross multiply
    42,780.84x = 64,174.50 × 11,616.36
  4. Step 4: Simplify right side
    42,780.84x = 745,474,094.82
  5. Step 5: Solve for x
    x = 745,474,094.82/42,780.84
  6. Step 6: Final answer
    x = 17,425.42

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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.