Home / 31,051.49-42,845.36-18,308.67

Finding the Fourth Proportional to 31,051.49, 42,845.36 and 18,308.67

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Solution

The fourth proportional to 31,051.49, 42,845.36 and 18,308.67 is: 25,262.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,051.49 : 42,845.36 = 18,308.67 : x
  2. Step 2: Convert to fraction form
    31,051.49/42,845.36 = 18,308.67/x
  3. Step 3: Cross multiply
    31,051.49x = 42,845.36 × 18,308.67
  4. Step 4: Simplify right side
    31,051.49x = 784,441,305.06
  5. Step 5: Solve for x
    x = 784,441,305.06/31,051.49
  6. Step 6: Final answer
    x = 25,262.60

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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.