Home / 12,210.13-18,308.76-4,311.15

Finding the Fourth Proportional to 12,210.13, 18,308.76 and 4,311.15

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Solution

The fourth proportional to 12,210.13, 18,308.76 and 4,311.15 is: 6,464.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.13 : 18,308.76 = 4,311.15 : x
  2. Step 2: Convert to fraction form
    12,210.13/18,308.76 = 4,311.15/x
  3. Step 3: Cross multiply
    12,210.13x = 18,308.76 × 4,311.15
  4. Step 4: Simplify right side
    12,210.13x = 78,931,810.67
  5. Step 5: Solve for x
    x = 78,931,810.67/12,210.13
  6. Step 6: Final answer
    x = 6,464.45

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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.