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Finding the Fourth Proportional to 15,594.76, 21,521.24 and 8,521.64

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Solution

The fourth proportional to 15,594.76, 21,521.24 and 8,521.64 is: 11,760.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,594.76 : 21,521.24 = 8,521.64 : x
  2. Step 2: Convert to fraction form
    15,594.76/21,521.24 = 8,521.64/x
  3. Step 3: Cross multiply
    15,594.76x = 21,521.24 × 8,521.64
  4. Step 4: Simplify right side
    15,594.76x = 183,396,259.63
  5. Step 5: Solve for x
    x = 183,396,259.63/15,594.76
  6. Step 6: Final answer
    x = 11,760.12

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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.