Home / 9,709.13-13,399.70-5,402.65

Finding the Fourth Proportional to 9,709.13, 13,399.70 and 5,402.65

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Solution

The fourth proportional to 9,709.13, 13,399.70 and 5,402.65 is: 7,456.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,709.13 : 13,399.70 = 5,402.65 : x
  2. Step 2: Convert to fraction form
    9,709.13/13,399.70 = 5,402.65/x
  3. Step 3: Cross multiply
    9,709.13x = 13,399.70 × 5,402.65
  4. Step 4: Simplify right side
    9,709.13x = 72,393,828.69
  5. Step 5: Solve for x
    x = 72,393,828.69/9,709.13
  6. Step 6: Final answer
    x = 7,456.27

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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.