Home / 30,639.47-42,283.49-17,213.09

Finding the Fourth Proportional to 30,639.47, 42,283.49 and 17,213.09

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Solution

The fourth proportional to 30,639.47, 42,283.49 and 17,213.09 is: 23,754.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,639.47 : 42,283.49 = 17,213.09 : x
  2. Step 2: Convert to fraction form
    30,639.47/42,283.49 = 17,213.09/x
  3. Step 3: Cross multiply
    30,639.47x = 42,283.49 × 17,213.09
  4. Step 4: Simplify right side
    30,639.47x = 727,829,221.40
  5. Step 5: Solve for x
    x = 727,829,221.40/30,639.47
  6. Step 6: Final answer
    x = 23,754.63

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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.