Home / 14,740.20-20,317.59-12,821.11

Finding the Fourth Proportional to 14,740.20, 20,317.59 and 12,821.11

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Solution

The fourth proportional to 14,740.20, 20,317.59 and 12,821.11 is: 17,672.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,740.20 : 20,317.59 = 12,821.11 : x
  2. Step 2: Convert to fraction form
    14,740.20/20,317.59 = 12,821.11/x
  3. Step 3: Cross multiply
    14,740.20x = 20,317.59 × 12,821.11
  4. Step 4: Simplify right side
    14,740.20x = 260,494,005.53
  5. Step 5: Solve for x
    x = 260,494,005.53/14,740.20
  6. Step 6: Final answer
    x = 17,672.35

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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.