Home / 20,860.02-28,782.30-12,364.80

Finding the Fourth Proportional to 20,860.02, 28,782.30 and 12,364.80

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Solution

The fourth proportional to 20,860.02, 28,782.30 and 12,364.80 is: 17,060.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.02 : 28,782.30 = 12,364.80 : x
  2. Step 2: Convert to fraction form
    20,860.02/28,782.30 = 12,364.80/x
  3. Step 3: Cross multiply
    20,860.02x = 28,782.30 × 12,364.80
  4. Step 4: Simplify right side
    20,860.02x = 355,887,383.04
  5. Step 5: Solve for x
    x = 355,887,383.04/20,860.02
  6. Step 6: Final answer
    x = 17,060.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.