Home / 30,966.50-42,726.44-18,220.23

Finding the Fourth Proportional to 30,966.50, 42,726.44 and 18,220.23

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Solution

The fourth proportional to 30,966.50, 42,726.44 and 18,220.23 is: 25,139.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,966.50 : 42,726.44 = 18,220.23 : x
  2. Step 2: Convert to fraction form
    30,966.50/42,726.44 = 18,220.23/x
  3. Step 3: Cross multiply
    30,966.50x = 42,726.44 × 18,220.23
  4. Step 4: Simplify right side
    30,966.50x = 778,485,769.66
  5. Step 5: Solve for x
    x = 778,485,769.66/30,966.50
  6. Step 6: Final answer
    x = 25,139.62

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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.