Home / 10,985.75-15,159.58-6,206.43

Finding the Fourth Proportional to 10,985.75, 15,159.58 and 6,206.43

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Solution

The fourth proportional to 10,985.75, 15,159.58 and 6,206.43 is: 8,564.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.75 : 15,159.58 = 6,206.43 : x
  2. Step 2: Convert to fraction form
    10,985.75/15,159.58 = 6,206.43/x
  3. Step 3: Cross multiply
    10,985.75x = 15,159.58 × 6,206.43
  4. Step 4: Simplify right side
    10,985.75x = 94,086,872.10
  5. Step 5: Solve for x
    x = 94,086,872.10/10,985.75
  6. Step 6: Final answer
    x = 8,564.45

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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.