Home / 10,554.61-15,827.80-3,977.20

Finding the Fourth Proportional to 10,554.61, 15,827.80 and 3,977.20

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Solution

The fourth proportional to 10,554.61, 15,827.80 and 3,977.20 is: 5,964.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,554.61 : 15,827.80 = 3,977.20 : x
  2. Step 2: Convert to fraction form
    10,554.61/15,827.80 = 3,977.20/x
  3. Step 3: Cross multiply
    10,554.61x = 15,827.80 × 3,977.20
  4. Step 4: Simplify right side
    10,554.61x = 62,950,326.16
  5. Step 5: Solve for x
    x = 62,950,326.16/10,554.61
  6. Step 6: Final answer
    x = 5,964.25

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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.