Home / 30,820.74-42,532.20-17,208.99

Finding the Fourth Proportional to 30,820.74, 42,532.20 and 17,208.99

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Solution

The fourth proportional to 30,820.74, 42,532.20 and 17,208.99 is: 23,748.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,820.74 : 42,532.20 = 17,208.99 : x
  2. Step 2: Convert to fraction form
    30,820.74/42,532.20 = 17,208.99/x
  3. Step 3: Cross multiply
    30,820.74x = 42,532.20 × 17,208.99
  4. Step 4: Simplify right side
    30,820.74x = 731,936,204.48
  5. Step 5: Solve for x
    x = 731,936,204.48/30,820.74
  6. Step 6: Final answer
    x = 23,748.17

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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.