Home / 31,836.32-43,931.56-18,408.45

Finding the Fourth Proportional to 31,836.32, 43,931.56 and 18,408.45

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Solution

The fourth proportional to 31,836.32, 43,931.56 and 18,408.45 is: 25,402.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,836.32 : 43,931.56 = 18,408.45 : x
  2. Step 2: Convert to fraction form
    31,836.32/43,931.56 = 18,408.45/x
  3. Step 3: Cross multiply
    31,836.32x = 43,931.56 × 18,408.45
  4. Step 4: Simplify right side
    31,836.32x = 808,711,780.03
  5. Step 5: Solve for x
    x = 808,711,780.03/31,836.32
  6. Step 6: Final answer
    x = 25,402.17

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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.