Home / 19,151.20-28,726.80-14,485.60

Finding the Fourth Proportional to 19,151.20, 28,726.80 and 14,485.60

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Solution

The fourth proportional to 19,151.20, 28,726.80 and 14,485.60 is: 21,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,151.20 : 28,726.80 = 14,485.60 : x
  2. Step 2: Convert to fraction form
    19,151.20/28,726.80 = 14,485.60/x
  3. Step 3: Cross multiply
    19,151.20x = 28,726.80 × 14,485.60
  4. Step 4: Simplify right side
    19,151.20x = 416,124,934.08
  5. Step 5: Solve for x
    x = 416,124,934.08/19,151.20
  6. Step 6: Final answer
    x = 21,728.40

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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.