Home / 31,425.48-47,128.20-10,361.60

Finding the Fourth Proportional to 31,425.48, 47,128.20 and 10,361.60

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Solution

The fourth proportional to 31,425.48, 47,128.20 and 10,361.60 is: 15,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425.48 : 47,128.20 = 10,361.60 : x
  2. Step 2: Convert to fraction form
    31,425.48/47,128.20 = 10,361.60/x
  3. Step 3: Cross multiply
    31,425.48x = 47,128.20 × 10,361.60
  4. Step 4: Simplify right side
    31,425.48x = 488,323,557.12
  5. Step 5: Solve for x
    x = 488,323,557.12/31,425.48
  6. Step 6: Final answer
    x = 15,539.10

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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.