Home / 19,881.20-29,784.32-16,615.28

Finding the Fourth Proportional to 19,881.20, 29,784.32 and 16,615.28

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Solution

The fourth proportional to 19,881.20, 29,784.32 and 16,615.28 is: 24,891.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.20 : 29,784.32 = 16,615.28 : x
  2. Step 2: Convert to fraction form
    19,881.20/29,784.32 = 16,615.28/x
  3. Step 3: Cross multiply
    19,881.20x = 29,784.32 × 16,615.28
  4. Step 4: Simplify right side
    19,881.20x = 494,874,816.41
  5. Step 5: Solve for x
    x = 494,874,816.41/19,881.20
  6. Step 6: Final answer
    x = 24,891.60

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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.