Home / 17,721.60-26,582.40-16,915.20

Finding the Fourth Proportional to 17,721.60, 26,582.40 and 16,915.20

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Solution

The fourth proportional to 17,721.60, 26,582.40 and 16,915.20 is: 25,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,721.60 : 26,582.40 = 16,915.20 : x
  2. Step 2: Convert to fraction form
    17,721.60/26,582.40 = 16,915.20/x
  3. Step 3: Cross multiply
    17,721.60x = 26,582.40 × 16,915.20
  4. Step 4: Simplify right side
    17,721.60x = 449,646,612.48
  5. Step 5: Solve for x
    x = 449,646,612.48/17,721.60
  6. Step 6: Final answer
    x = 25,372.80

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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.