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Finding the Fourth Proportional to 10,885.80, 15,000.90 and 7,733.16

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Solution

The fourth proportional to 10,885.80, 15,000.90 and 7,733.16 is: 10,656.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.80 : 15,000.90 = 7,733.16 : x
  2. Step 2: Convert to fraction form
    10,885.80/15,000.90 = 7,733.16/x
  3. Step 3: Cross multiply
    10,885.80x = 15,000.90 × 7,733.16
  4. Step 4: Simplify right side
    10,885.80x = 116,004,359.84
  5. Step 5: Solve for x
    x = 116,004,359.84/10,885.80
  6. Step 6: Final answer
    x = 10,656.48

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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.