Home / 30,747.78-42,434.55-17,321.67

Finding the Fourth Proportional to 30,747.78, 42,434.55 and 17,321.67

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Solution

The fourth proportional to 30,747.78, 42,434.55 and 17,321.67 is: 23,905.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,747.78 : 42,434.55 = 17,321.67 : x
  2. Step 2: Convert to fraction form
    30,747.78/42,434.55 = 17,321.67/x
  3. Step 3: Cross multiply
    30,747.78x = 42,434.55 × 17,321.67
  4. Step 4: Simplify right side
    30,747.78x = 735,037,271.70
  5. Step 5: Solve for x
    x = 735,037,271.70/30,747.78
  6. Step 6: Final answer
    x = 23,905.38

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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.