Home / 31,455.76-43,407.28-17,305.88

Finding the Fourth Proportional to 31,455.76, 43,407.28 and 17,305.88

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Solution

The fourth proportional to 31,455.76, 43,407.28 and 17,305.88 is: 23,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.76 : 43,407.28 = 17,305.88 : x
  2. Step 2: Convert to fraction form
    31,455.76/43,407.28 = 17,305.88/x
  3. Step 3: Cross multiply
    31,455.76x = 43,407.28 × 17,305.88
  4. Step 4: Simplify right side
    31,455.76x = 751,201,178.81
  5. Step 5: Solve for x
    x = 751,201,178.81/31,455.76
  6. Step 6: Final answer
    x = 23,881.20

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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.