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Finding the Fourth Proportional to 15,683.04, 21,643.04 and 8,609.92

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Solution

The fourth proportional to 15,683.04, 21,643.04 and 8,609.92 is: 11,881.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.04 : 21,643.04 = 8,609.92 : x
  2. Step 2: Convert to fraction form
    15,683.04/21,643.04 = 8,609.92/x
  3. Step 3: Cross multiply
    15,683.04x = 21,643.04 × 8,609.92
  4. Step 4: Simplify right side
    15,683.04x = 186,344,842.96
  5. Step 5: Solve for x
    x = 186,344,842.96/15,683.04
  6. Step 6: Final answer
    x = 11,881.93

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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.