Home / 10,859.10-14,985.32-6,143.28

Finding the Fourth Proportional to 10,859.10, 14,985.32 and 6,143.28

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Solution

The fourth proportional to 10,859.10, 14,985.32 and 6,143.28 is: 8,477.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.10 : 14,985.32 = 6,143.28 : x
  2. Step 2: Convert to fraction form
    10,859.10/14,985.32 = 6,143.28/x
  3. Step 3: Cross multiply
    10,859.10x = 14,985.32 × 6,143.28
  4. Step 4: Simplify right side
    10,859.10x = 92,058,985.93
  5. Step 5: Solve for x
    x = 92,058,985.93/10,859.10
  6. Step 6: Final answer
    x = 8,477.59

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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.