Home / 31,210.20-46,815.30-18,744.30

Finding the Fourth Proportional to 31,210.20, 46,815.30 and 18,744.30

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Solution

The fourth proportional to 31,210.20, 46,815.30 and 18,744.30 is: 28,116.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,210.20 : 46,815.30 = 18,744.30 : x
  2. Step 2: Convert to fraction form
    31,210.20/46,815.30 = 18,744.30/x
  3. Step 3: Cross multiply
    31,210.20x = 46,815.30 × 18,744.30
  4. Step 4: Simplify right side
    31,210.20x = 877,520,027.79
  5. Step 5: Solve for x
    x = 877,520,027.79/31,210.20
  6. Step 6: Final answer
    x = 28,116.45

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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.