Home / 31,431.64-47,140.16-9,239.08

Finding the Fourth Proportional to 31,431.64, 47,140.16 and 9,239.08

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Solution

The fourth proportional to 31,431.64, 47,140.16 and 9,239.08 is: 13,856.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.64 : 47,140.16 = 9,239.08 : x
  2. Step 2: Convert to fraction form
    31,431.64/47,140.16 = 9,239.08/x
  3. Step 3: Cross multiply
    31,431.64x = 47,140.16 × 9,239.08
  4. Step 4: Simplify right side
    31,431.64x = 435,531,709.45
  5. Step 5: Solve for x
    x = 435,531,709.45/31,431.64
  6. Step 6: Final answer
    x = 13,856.47

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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.