Home / 12,528.52-17,288.50-6,939.72

Finding the Fourth Proportional to 12,528.52, 17,288.50 and 6,939.72

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Solution

The fourth proportional to 12,528.52, 17,288.50 and 6,939.72 is: 9,576.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.52 : 17,288.50 = 6,939.72 : x
  2. Step 2: Convert to fraction form
    12,528.52/17,288.50 = 6,939.72/x
  3. Step 3: Cross multiply
    12,528.52x = 17,288.50 × 6,939.72
  4. Step 4: Simplify right side
    12,528.52x = 119,977,349.22
  5. Step 5: Solve for x
    x = 119,977,349.22/12,528.52
  6. Step 6: Final answer
    x = 9,576.34

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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.