Home / 31,361.22-47,041.56-7,987.32

Finding the Fourth Proportional to 31,361.22, 47,041.56 and 7,987.32

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Solution

The fourth proportional to 31,361.22, 47,041.56 and 7,987.32 is: 11,980.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,361.22 : 47,041.56 = 7,987.32 : x
  2. Step 2: Convert to fraction form
    31,361.22/47,041.56 = 7,987.32/x
  3. Step 3: Cross multiply
    31,361.22x = 47,041.56 × 7,987.32
  4. Step 4: Simplify right side
    31,361.22x = 375,735,993.02
  5. Step 5: Solve for x
    x = 375,735,993.02/31,361.22
  6. Step 6: Final answer
    x = 11,980.91

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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.