Home / 42,618.40-63,927.60-11,456.80

Finding the Fourth Proportional to 42,618.40, 63,927.60 and 11,456.80

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Solution

The fourth proportional to 42,618.40, 63,927.60 and 11,456.80 is: 17,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,618.40 : 63,927.60 = 11,456.80 : x
  2. Step 2: Convert to fraction form
    42,618.40/63,927.60 = 11,456.80/x
  3. Step 3: Cross multiply
    42,618.40x = 63,927.60 × 11,456.80
  4. Step 4: Simplify right side
    42,618.40x = 732,405,727.68
  5. Step 5: Solve for x
    x = 732,405,727.68/42,618.40
  6. Step 6: Final answer
    x = 17,185.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.