Home / 28,006.42-38,631.20-16,667.45

Finding the Fourth Proportional to 28,006.42, 38,631.20 and 16,667.45

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Solution

The fourth proportional to 28,006.42, 38,631.20 and 16,667.45 is: 22,990.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.42 : 38,631.20 = 16,667.45 : x
  2. Step 2: Convert to fraction form
    28,006.42/38,631.20 = 16,667.45/x
  3. Step 3: Cross multiply
    28,006.42x = 38,631.20 × 16,667.45
  4. Step 4: Simplify right side
    28,006.42x = 643,883,657.77
  5. Step 5: Solve for x
    x = 643,883,657.77/28,006.42
  6. Step 6: Final answer
    x = 22,990.57

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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.