Home / 15,985.06-23,985.70-10,780

Finding the Fourth Proportional to 15,985.06, 23,985.70 and 10,780

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Solution

The fourth proportional to 15,985.06, 23,985.70 and 10,780 is: 16,175.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,985.06 : 23,985.70 = 10,780 : x
  2. Step 2: Convert to fraction form
    15,985.06/23,985.70 = 10,780/x
  3. Step 3: Cross multiply
    15,985.06x = 23,985.70 × 10,780
  4. Step 4: Simplify right side
    15,985.06x = 258,565,846
  5. Step 5: Solve for x
    x = 258,565,846/15,985.06
  6. Step 6: Final answer
    x = 16,175.47

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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.