Home / 30,901.97-42,638.45-18,157.23

Finding the Fourth Proportional to 30,901.97, 42,638.45 and 18,157.23

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Solution

The fourth proportional to 30,901.97, 42,638.45 and 18,157.23 is: 25,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,901.97 : 42,638.45 = 18,157.23 : x
  2. Step 2: Convert to fraction form
    30,901.97/42,638.45 = 18,157.23/x
  3. Step 3: Cross multiply
    30,901.97x = 42,638.45 × 18,157.23
  4. Step 4: Simplify right side
    30,901.97x = 774,196,052.71
  5. Step 5: Solve for x
    x = 774,196,052.71/30,901.97
  6. Step 6: Final answer
    x = 25,053.29

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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.