Home / 31,660.83-47,478.92-11,928.60

Finding the Fourth Proportional to 31,660.83, 47,478.92 and 11,928.60

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Solution

The fourth proportional to 31,660.83, 47,478.92 and 11,928.60 is: 17,888.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,660.83 : 47,478.92 = 11,928.60 : x
  2. Step 2: Convert to fraction form
    31,660.83/47,478.92 = 11,928.60/x
  3. Step 3: Cross multiply
    31,660.83x = 47,478.92 × 11,928.60
  4. Step 4: Simplify right side
    31,660.83x = 566,356,985.47
  5. Step 5: Solve for x
    x = 566,356,985.47/31,660.83
  6. Step 6: Final answer
    x = 17,888.25

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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.