Home / 19,915.60-29,830.20-17,726.80

Finding the Fourth Proportional to 19,915.60, 29,830.20 and 17,726.80

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Solution

The fourth proportional to 19,915.60, 29,830.20 and 17,726.80 is: 26,551.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.60 : 29,830.20 = 17,726.80 : x
  2. Step 2: Convert to fraction form
    19,915.60/29,830.20 = 17,726.80/x
  3. Step 3: Cross multiply
    19,915.60x = 29,830.20 × 17,726.80
  4. Step 4: Simplify right side
    19,915.60x = 528,793,989.36
  5. Step 5: Solve for x
    x = 528,793,989.36/19,915.60
  6. Step 6: Final answer
    x = 26,551.75

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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.