Home / 30,313.34-45,438.92-13,685.05

Finding the Fourth Proportional to 30,313.34, 45,438.92 and 13,685.05

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Solution

The fourth proportional to 30,313.34, 45,438.92 and 13,685.05 is: 20,513.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,313.34 : 45,438.92 = 13,685.05 : x
  2. Step 2: Convert to fraction form
    30,313.34/45,438.92 = 13,685.05/x
  3. Step 3: Cross multiply
    30,313.34x = 45,438.92 × 13,685.05
  4. Step 4: Simplify right side
    30,313.34x = 621,834,008.82
  5. Step 5: Solve for x
    x = 621,834,008.82/30,313.34
  6. Step 6: Final answer
    x = 20,513.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.