Home / 28,245.78-42,341.10-13,450.74

Finding the Fourth Proportional to 28,245.78, 42,341.10 and 13,450.74

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Solution

The fourth proportional to 28,245.78, 42,341.10 and 13,450.74 is: 20,162.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.78 : 42,341.10 = 13,450.74 : x
  2. Step 2: Convert to fraction form
    28,245.78/42,341.10 = 13,450.74/x
  3. Step 3: Cross multiply
    28,245.78x = 42,341.10 × 13,450.74
  4. Step 4: Simplify right side
    28,245.78x = 569,519,127.41
  5. Step 5: Solve for x
    x = 569,519,127.41/28,245.78
  6. Step 6: Final answer
    x = 20,162.98

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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.