Home / 19,784.64-29,688.48-7,473.60

Finding the Fourth Proportional to 19,784.64, 29,688.48 and 7,473.60

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Solution

The fourth proportional to 19,784.64, 29,688.48 and 7,473.60 is: 11,214.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,784.64 : 29,688.48 = 7,473.60 : x
  2. Step 2: Convert to fraction form
    19,784.64/29,688.48 = 7,473.60/x
  3. Step 3: Cross multiply
    19,784.64x = 29,688.48 × 7,473.60
  4. Step 4: Simplify right side
    19,784.64x = 221,879,824.13
  5. Step 5: Solve for x
    x = 221,879,824.13/19,784.64
  6. Step 6: Final answer
    x = 11,214.75

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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.