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Finding the Fourth Proportional to 28,010.98, 42,014.97 and 10,479.49

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Solution

The fourth proportional to 28,010.98, 42,014.97 and 10,479.49 is: 15,718.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.98 : 42,014.97 = 10,479.49 : x
  2. Step 2: Convert to fraction form
    28,010.98/42,014.97 = 10,479.49/x
  3. Step 3: Cross multiply
    28,010.98x = 42,014.97 × 10,479.49
  4. Step 4: Simplify right side
    28,010.98x = 440,295,457.97
  5. Step 5: Solve for x
    x = 440,295,457.97/28,010.98
  6. Step 6: Final answer
    x = 15,718.67

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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.