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Finding the Fourth Proportional to 29,528.40, 40,722.64 and 19,453.20

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Solution

The fourth proportional to 29,528.40, 40,722.64 and 19,453.20 is: 26,827.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,528.40 : 40,722.64 = 19,453.20 : x
  2. Step 2: Convert to fraction form
    29,528.40/40,722.64 = 19,453.20/x
  3. Step 3: Cross multiply
    29,528.40x = 40,722.64 × 19,453.20
  4. Step 4: Simplify right side
    29,528.40x = 792,185,660.45
  5. Step 5: Solve for x
    x = 792,185,660.45/29,528.40
  6. Step 6: Final answer
    x = 26,827.92

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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.