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Finding the Fourth Proportional to 11,000.90, 15,445 and 11,000.90

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Solution

The fourth proportional to 11,000.90, 15,445 and 11,000.90 is: 15,445

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,000.90 : 15,445 = 11,000.90 : x
  2. Step 2: Convert to fraction form
    11,000.90/15,445 = 11,000.90/x
  3. Step 3: Cross multiply
    11,000.90x = 15,445 × 11,000.90
  4. Step 4: Simplify right side
    11,000.90x = 169,908,900.50
  5. Step 5: Solve for x
    x = 169,908,900.50/11,000.90
  6. Step 6: Final answer
    x = 15,445

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.