Home / 31,431.49-47,140.61-9,238.84

Finding the Fourth Proportional to 31,431.49, 47,140.61 and 9,238.84

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Solution

The fourth proportional to 31,431.49, 47,140.61 and 9,238.84 is: 13,856.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.49 : 47,140.61 = 9,238.84 : x
  2. Step 2: Convert to fraction form
    31,431.49/47,140.61 = 9,238.84/x
  3. Step 3: Cross multiply
    31,431.49x = 47,140.61 × 9,238.84
  4. Step 4: Simplify right side
    31,431.49x = 435,524,389.25
  5. Step 5: Solve for x
    x = 435,524,389.25/31,431.49
  6. Step 6: Final answer
    x = 13,856.31

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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.