Home / 30,703.89-42,371.28-17,275.15

Finding the Fourth Proportional to 30,703.89, 42,371.28 and 17,275.15

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Solution

The fourth proportional to 30,703.89, 42,371.28 and 17,275.15 is: 23,839.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,703.89 : 42,371.28 = 17,275.15 : x
  2. Step 2: Convert to fraction form
    30,703.89/42,371.28 = 17,275.15/x
  3. Step 3: Cross multiply
    30,703.89x = 42,371.28 × 17,275.15
  4. Step 4: Simplify right side
    30,703.89x = 731,970,480.35
  5. Step 5: Solve for x
    x = 731,970,480.35/30,703.89
  6. Step 6: Final answer
    x = 23,839.67

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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.