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Finding the Fourth Proportional to 15,773.76, 21,760.80 and 11,056.32

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Solution

The fourth proportional to 15,773.76, 21,760.80 and 11,056.32 is: 15,252.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,773.76 : 21,760.80 = 11,056.32 : x
  2. Step 2: Convert to fraction form
    15,773.76/21,760.80 = 11,056.32/x
  3. Step 3: Cross multiply
    15,773.76x = 21,760.80 × 11,056.32
  4. Step 4: Simplify right side
    15,773.76x = 240,594,368.26
  5. Step 5: Solve for x
    x = 240,594,368.26/15,773.76
  6. Step 6: Final answer
    x = 15,252.82

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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.