Home / 18,740.10-28,110.15-14,511.90

Finding the Fourth Proportional to 18,740.10, 28,110.15 and 14,511.90

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Solution

The fourth proportional to 18,740.10, 28,110.15 and 14,511.90 is: 21,767.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.10 : 28,110.15 = 14,511.90 : x
  2. Step 2: Convert to fraction form
    18,740.10/28,110.15 = 14,511.90/x
  3. Step 3: Cross multiply
    18,740.10x = 28,110.15 × 14,511.90
  4. Step 4: Simplify right side
    18,740.10x = 407,931,685.79
  5. Step 5: Solve for x
    x = 407,931,685.79/18,740.10
  6. Step 6: Final answer
    x = 21,767.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.