Home / 28,015.68-38,666.10-16,685.70

Finding the Fourth Proportional to 28,015.68, 38,666.10 and 16,685.70

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Solution

The fourth proportional to 28,015.68, 38,666.10 and 16,685.70 is: 23,028.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.68 : 38,666.10 = 16,685.70 : x
  2. Step 2: Convert to fraction form
    28,015.68/38,666.10 = 16,685.70/x
  3. Step 3: Cross multiply
    28,015.68x = 38,666.10 × 16,685.70
  4. Step 4: Simplify right side
    28,015.68x = 645,170,944.77
  5. Step 5: Solve for x
    x = 645,170,944.77/28,015.68
  6. Step 6: Final answer
    x = 23,028.92

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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.