Home / 31,457.45-43,408.64-18,534.67

Finding the Fourth Proportional to 31,457.45, 43,408.64 and 18,534.67

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Solution

The fourth proportional to 31,457.45, 43,408.64 and 18,534.67 is: 25,576.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,457.45 : 43,408.64 = 18,534.67 : x
  2. Step 2: Convert to fraction form
    31,457.45/43,408.64 = 18,534.67/x
  3. Step 3: Cross multiply
    31,457.45x = 43,408.64 × 18,534.67
  4. Step 4: Simplify right side
    31,457.45x = 804,564,507.83
  5. Step 5: Solve for x
    x = 804,564,507.83/31,457.45
  6. Step 6: Final answer
    x = 25,576.28

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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.