Home / 31,505.80-47,258.70-20,352.10

Finding the Fourth Proportional to 31,505.80, 47,258.70 and 20,352.10

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Solution

The fourth proportional to 31,505.80, 47,258.70 and 20,352.10 is: 30,528.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,505.80 : 47,258.70 = 20,352.10 : x
  2. Step 2: Convert to fraction form
    31,505.80/47,258.70 = 20,352.10/x
  3. Step 3: Cross multiply
    31,505.80x = 47,258.70 × 20,352.10
  4. Step 4: Simplify right side
    31,505.80x = 961,813,788.27
  5. Step 5: Solve for x
    x = 961,813,788.27/31,505.80
  6. Step 6: Final answer
    x = 30,528.15

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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.