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Finding the Fourth Proportional to 19,980.77, 27,574.14 and 11,484.47

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Solution

The fourth proportional to 19,980.77, 27,574.14 and 11,484.47 is: 15,848.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.77 : 27,574.14 = 11,484.47 : x
  2. Step 2: Convert to fraction form
    19,980.77/27,574.14 = 11,484.47/x
  3. Step 3: Cross multiply
    19,980.77x = 27,574.14 × 11,484.47
  4. Step 4: Simplify right side
    19,980.77x = 316,674,245.74
  5. Step 5: Solve for x
    x = 316,674,245.74/19,980.77
  6. Step 6: Final answer
    x = 15,848.96

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.