Home / 28,742.40-39,656.21-16,641.90

Finding the Fourth Proportional to 28,742.40, 39,656.21 and 16,641.90

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Solution

The fourth proportional to 28,742.40, 39,656.21 and 16,641.90 is: 22,961.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,742.40 : 39,656.21 = 16,641.90 : x
  2. Step 2: Convert to fraction form
    28,742.40/39,656.21 = 16,641.90/x
  3. Step 3: Cross multiply
    28,742.40x = 39,656.21 × 16,641.90
  4. Step 4: Simplify right side
    28,742.40x = 659,954,597.99
  5. Step 5: Solve for x
    x = 659,954,597.99/28,742.40
  6. Step 6: Final answer
    x = 22,961.01

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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.