Home / 12,752.32-19,129.16-4,428.76

Finding the Fourth Proportional to 12,752.32, 19,129.16 and 4,428.76

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Solution

The fourth proportional to 12,752.32, 19,129.16 and 4,428.76 is: 6,643.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,752.32 : 19,129.16 = 4,428.76 : x
  2. Step 2: Convert to fraction form
    12,752.32/19,129.16 = 4,428.76/x
  3. Step 3: Cross multiply
    12,752.32x = 19,129.16 × 4,428.76
  4. Step 4: Simplify right side
    12,752.32x = 84,718,458.64
  5. Step 5: Solve for x
    x = 84,718,458.64/12,752.32
  6. Step 6: Final answer
    x = 6,643.38

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Half scale
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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.