Home / 12,210.48-18,270.36-7,282.80

Finding the Fourth Proportional to 12,210.48, 18,270.36 and 7,282.80

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Solution

The fourth proportional to 12,210.48, 18,270.36 and 7,282.80 is: 10,897.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.48 : 18,270.36 = 7,282.80 : x
  2. Step 2: Convert to fraction form
    12,210.48/18,270.36 = 7,282.80/x
  3. Step 3: Cross multiply
    12,210.48x = 18,270.36 × 7,282.80
  4. Step 4: Simplify right side
    12,210.48x = 133,059,377.81
  5. Step 5: Solve for x
    x = 133,059,377.81/12,210.48
  6. Step 6: Final answer
    x = 10,897.15

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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.