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Finding the Fourth Proportional to 12,807.10, 19,210.65 and 11,349.10

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Solution

The fourth proportional to 12,807.10, 19,210.65 and 11,349.10 is: 17,023.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.10 : 19,210.65 = 11,349.10 : x
  2. Step 2: Convert to fraction form
    12,807.10/19,210.65 = 11,349.10/x
  3. Step 3: Cross multiply
    12,807.10x = 19,210.65 × 11,349.10
  4. Step 4: Simplify right side
    12,807.10x = 218,023,587.92
  5. Step 5: Solve for x
    x = 218,023,587.92/12,807.10
  6. Step 6: Final answer
    x = 17,023.65

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Similar ratio
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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.