Home / 31,612.16-47,362.56-21,076.64

Finding the Fourth Proportional to 31,612.16, 47,362.56 and 21,076.64

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Solution

The fourth proportional to 31,612.16, 47,362.56 and 21,076.64 is: 31,577.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,612.16 : 47,362.56 = 21,076.64 : x
  2. Step 2: Convert to fraction form
    31,612.16/47,362.56 = 21,076.64/x
  3. Step 3: Cross multiply
    31,612.16x = 47,362.56 × 21,076.64
  4. Step 4: Simplify right side
    31,612.16x = 998,243,626.60
  5. Step 5: Solve for x
    x = 998,243,626.60/31,612.16
  6. Step 6: Final answer
    x = 31,577.84

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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.