Home / 12,210.70-18,316.05-4,811.13

Finding the Fourth Proportional to 12,210.70, 18,316.05 and 4,811.13

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Solution

The fourth proportional to 12,210.70, 18,316.05 and 4,811.13 is: 7,216.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.70 : 18,316.05 = 4,811.13 : x
  2. Step 2: Convert to fraction form
    12,210.70/18,316.05 = 4,811.13/x
  3. Step 3: Cross multiply
    12,210.70x = 18,316.05 × 4,811.13
  4. Step 4: Simplify right side
    12,210.70x = 88,120,897.64
  5. Step 5: Solve for x
    x = 88,120,897.64/12,210.70
  6. Step 6: Final answer
    x = 7,216.70

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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.