Home / 20,646.84-28,440.54-16,656.78

Finding the Fourth Proportional to 20,646.84, 28,440.54 and 16,656.78

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Solution

The fourth proportional to 20,646.84, 28,440.54 and 16,656.78 is: 22,944.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.84 : 28,440.54 = 16,656.78 : x
  2. Step 2: Convert to fraction form
    20,646.84/28,440.54 = 16,656.78/x
  3. Step 3: Cross multiply
    20,646.84x = 28,440.54 × 16,656.78
  4. Step 4: Simplify right side
    20,646.84x = 473,727,817.86
  5. Step 5: Solve for x
    x = 473,727,817.86/20,646.84
  6. Step 6: Final answer
    x = 22,944.33

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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.