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Finding the Fourth Proportional to 16,935.20, 25,402.80 and 15,783.20

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Solution

The fourth proportional to 16,935.20, 25,402.80 and 15,783.20 is: 23,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,935.20 : 25,402.80 = 15,783.20 : x
  2. Step 2: Convert to fraction form
    16,935.20/25,402.80 = 15,783.20/x
  3. Step 3: Cross multiply
    16,935.20x = 25,402.80 × 15,783.20
  4. Step 4: Simplify right side
    16,935.20x = 400,937,472.96
  5. Step 5: Solve for x
    x = 400,937,472.96/16,935.20
  6. Step 6: Final answer
    x = 23,674.80

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1.5x scale

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.