Home / 20,770.74-28,669.68-14,819.67

Finding the Fourth Proportional to 20,770.74, 28,669.68 and 14,819.67

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Solution

The fourth proportional to 20,770.74, 28,669.68 and 14,819.67 is: 20,455.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.74 : 28,669.68 = 14,819.67 : x
  2. Step 2: Convert to fraction form
    20,770.74/28,669.68 = 14,819.67/x
  3. Step 3: Cross multiply
    20,770.74x = 28,669.68 × 14,819.67
  4. Step 4: Simplify right side
    20,770.74x = 424,875,196.61
  5. Step 5: Solve for x
    x = 424,875,196.61/20,770.74
  6. Step 6: Final answer
    x = 20,455.47

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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.