Home / 10,889.10-16,338.60-6,455.52

Finding the Fourth Proportional to 10,889.10, 16,338.60 and 6,455.52

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Solution

The fourth proportional to 10,889.10, 16,338.60 and 6,455.52 is: 9,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.10 : 16,338.60 = 6,455.52 : x
  2. Step 2: Convert to fraction form
    10,889.10/16,338.60 = 6,455.52/x
  3. Step 3: Cross multiply
    10,889.10x = 16,338.60 × 6,455.52
  4. Step 4: Simplify right side
    10,889.10x = 105,474,159.07
  5. Step 5: Solve for x
    x = 105,474,159.07/10,889.10
  6. Step 6: Final answer
    x = 9,686.21

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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.