Home / 28,714.06-42,990.18-21,671.67

Finding the Fourth Proportional to 28,714.06, 42,990.18 and 21,671.67

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Solution

The fourth proportional to 28,714.06, 42,990.18 and 21,671.67 is: 32,446.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,714.06 : 42,990.18 = 21,671.67 : x
  2. Step 2: Convert to fraction form
    28,714.06/42,990.18 = 21,671.67/x
  3. Step 3: Cross multiply
    28,714.06x = 42,990.18 × 21,671.67
  4. Step 4: Simplify right side
    28,714.06x = 931,669,101.68
  5. Step 5: Solve for x
    x = 931,669,101.68/28,714.06
  6. Step 6: Final answer
    x = 32,446.44

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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.