Home / 30,749.85-42,438.80-17,323.70

Finding the Fourth Proportional to 30,749.85, 42,438.80 and 17,323.70

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Solution

The fourth proportional to 30,749.85, 42,438.80 and 17,323.70 is: 23,908.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,749.85 : 42,438.80 = 17,323.70 : x
  2. Step 2: Convert to fraction form
    30,749.85/42,438.80 = 17,323.70/x
  3. Step 3: Cross multiply
    30,749.85x = 42,438.80 × 17,323.70
  4. Step 4: Simplify right side
    30,749.85x = 735,196,870.68
  5. Step 5: Solve for x
    x = 735,196,870.68/30,749.85
  6. Step 6: Final answer
    x = 23,908.96

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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.