Home / 30,455.60-42,143.64-25,972.16

Finding the Fourth Proportional to 30,455.60, 42,143.64 and 25,972.16

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Solution

The fourth proportional to 30,455.60, 42,143.64 and 25,972.16 is: 35,939.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,455.60 : 42,143.64 = 25,972.16 : x
  2. Step 2: Convert to fraction form
    30,455.60/42,143.64 = 25,972.16/x
  3. Step 3: Cross multiply
    30,455.60x = 42,143.64 × 25,972.16
  4. Step 4: Simplify right side
    30,455.60x = 1,094,561,361.06
  5. Step 5: Solve for x
    x = 1,094,561,361.06/30,455.60
  6. Step 6: Final answer
    x = 35,939.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.