Home / 28,111.80-38,803.14-16,789.68

Finding the Fourth Proportional to 28,111.80, 38,803.14 and 16,789.68

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Solution

The fourth proportional to 28,111.80, 38,803.14 and 16,789.68 is: 23,175.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.80 : 38,803.14 = 16,789.68 : x
  2. Step 2: Convert to fraction form
    28,111.80/38,803.14 = 16,789.68/x
  3. Step 3: Cross multiply
    28,111.80x = 38,803.14 × 16,789.68
  4. Step 4: Simplify right side
    28,111.80x = 651,492,303.60
  5. Step 5: Solve for x
    x = 651,492,303.60/28,111.80
  6. Step 6: Final answer
    x = 23,175.05

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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.