Home / 10,985.82-15,156.88-6,734.63

Finding the Fourth Proportional to 10,985.82, 15,156.88 and 6,734.63

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Solution

The fourth proportional to 10,985.82, 15,156.88 and 6,734.63 is: 9,291.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.82 : 15,156.88 = 6,734.63 : x
  2. Step 2: Convert to fraction form
    10,985.82/15,156.88 = 6,734.63/x
  3. Step 3: Cross multiply
    10,985.82x = 15,156.88 × 6,734.63
  4. Step 4: Simplify right side
    10,985.82x = 102,075,978.75
  5. Step 5: Solve for x
    x = 102,075,978.75/10,985.82
  6. Step 6: Final answer
    x = 9,291.61

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1.5x scale

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.