Home / 31,540.36-47,109.48-28,533.78

Finding the Fourth Proportional to 31,540.36, 47,109.48 and 28,533.78

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Solution

The fourth proportional to 31,540.36, 47,109.48 and 28,533.78 is: 42,618.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,540.36 : 47,109.48 = 28,533.78 : x
  2. Step 2: Convert to fraction form
    31,540.36/47,109.48 = 28,533.78/x
  3. Step 3: Cross multiply
    31,540.36x = 47,109.48 × 28,533.78
  4. Step 4: Simplify right side
    31,540.36x = 1,344,211,597.79
  5. Step 5: Solve for x
    x = 1,344,211,597.79/31,540.36
  6. Step 6: Final answer
    x = 42,618.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.