Home / 12,210.12-18,312.30-5,632.20

Finding the Fourth Proportional to 12,210.12, 18,312.30 and 5,632.20

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Solution

The fourth proportional to 12,210.12, 18,312.30 and 5,632.20 is: 8,446.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.12 : 18,312.30 = 5,632.20 : x
  2. Step 2: Convert to fraction form
    12,210.12/18,312.30 = 5,632.20/x
  3. Step 3: Cross multiply
    12,210.12x = 18,312.30 × 5,632.20
  4. Step 4: Simplify right side
    12,210.12x = 103,138,536.06
  5. Step 5: Solve for x
    x = 103,138,536.06/12,210.12
  6. Step 6: Final answer
    x = 8,446.97

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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.