Home / 31,217.20-46,728.60-18,030.40

Finding the Fourth Proportional to 31,217.20, 46,728.60 and 18,030.40

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Solution

The fourth proportional to 31,217.20, 46,728.60 and 18,030.40 is: 26,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,217.20 : 46,728.60 = 18,030.40 : x
  2. Step 2: Convert to fraction form
    31,217.20/46,728.60 = 18,030.40/x
  3. Step 3: Cross multiply
    31,217.20x = 46,728.60 × 18,030.40
  4. Step 4: Simplify right side
    31,217.20x = 842,535,349.44
  5. Step 5: Solve for x
    x = 842,535,349.44/31,217.20
  6. Step 6: Final answer
    x = 26,989.46

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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.