Home / 31,215.60-46,823.40-20,134.80

Finding the Fourth Proportional to 31,215.60, 46,823.40 and 20,134.80

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Solution

The fourth proportional to 31,215.60, 46,823.40 and 20,134.80 is: 30,202.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,215.60 : 46,823.40 = 20,134.80 : x
  2. Step 2: Convert to fraction form
    31,215.60/46,823.40 = 20,134.80/x
  3. Step 3: Cross multiply
    31,215.60x = 46,823.40 × 20,134.80
  4. Step 4: Simplify right side
    31,215.60x = 942,779,794.32
  5. Step 5: Solve for x
    x = 942,779,794.32/31,215.60
  6. Step 6: Final answer
    x = 30,202.20

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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.