Home / 12,857.40-19,285.92-5,066.28

Finding the Fourth Proportional to 12,857.40, 19,285.92 and 5,066.28

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Solution

The fourth proportional to 12,857.40, 19,285.92 and 5,066.28 is: 7,599.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.40 : 19,285.92 = 5,066.28 : x
  2. Step 2: Convert to fraction form
    12,857.40/19,285.92 = 5,066.28/x
  3. Step 3: Cross multiply
    12,857.40x = 19,285.92 × 5,066.28
  4. Step 4: Simplify right side
    12,857.40x = 97,707,870.78
  5. Step 5: Solve for x
    x = 97,707,870.78/12,857.40
  6. Step 6: Final answer
    x = 7,599.35

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Double scale
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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.