Home / 31,718.80-47,578.20-18,564.40

Finding the Fourth Proportional to 31,718.80, 47,578.20 and 18,564.40

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Solution

The fourth proportional to 31,718.80, 47,578.20 and 18,564.40 is: 27,846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.80 : 47,578.20 = 18,564.40 : x
  2. Step 2: Convert to fraction form
    31,718.80/47,578.20 = 18,564.40/x
  3. Step 3: Cross multiply
    31,718.80x = 47,578.20 × 18,564.40
  4. Step 4: Simplify right side
    31,718.80x = 883,260,736.08
  5. Step 5: Solve for x
    x = 883,260,736.08/31,718.80
  6. Step 6: Final answer
    x = 27,846.60

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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.