Home / 10,900.20-16,307.10-9,455.40

Finding the Fourth Proportional to 10,900.20, 16,307.10 and 9,455.40

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Solution

The fourth proportional to 10,900.20, 16,307.10 and 9,455.40 is: 14,145.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.20 : 16,307.10 = 9,455.40 : x
  2. Step 2: Convert to fraction form
    10,900.20/16,307.10 = 9,455.40/x
  3. Step 3: Cross multiply
    10,900.20x = 16,307.10 × 9,455.40
  4. Step 4: Simplify right side
    10,900.20x = 154,190,153.34
  5. Step 5: Solve for x
    x = 154,190,153.34/10,900.20
  6. Step 6: Final answer
    x = 14,145.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.