Home / 31,447.32-47,138.16-11,717.28

Finding the Fourth Proportional to 31,447.32, 47,138.16 and 11,717.28

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Solution

The fourth proportional to 31,447.32, 47,138.16 and 11,717.28 is: 17,563.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,447.32 : 47,138.16 = 11,717.28 : x
  2. Step 2: Convert to fraction form
    31,447.32/47,138.16 = 11,717.28/x
  3. Step 3: Cross multiply
    31,447.32x = 47,138.16 × 11,717.28
  4. Step 4: Simplify right side
    31,447.32x = 552,331,019.40
  5. Step 5: Solve for x
    x = 552,331,019.40/31,447.32
  6. Step 6: Final answer
    x = 17,563.69

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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.