Home / 21,254.18-31,880.46-5,671.67

Finding the Fourth Proportional to 21,254.18, 31,880.46 and 5,671.67

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Solution

The fourth proportional to 21,254.18, 31,880.46 and 5,671.67 is: 8,507.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.18 : 31,880.46 = 5,671.67 : x
  2. Step 2: Convert to fraction form
    21,254.18/31,880.46 = 5,671.67/x
  3. Step 3: Cross multiply
    21,254.18x = 31,880.46 × 5,671.67
  4. Step 4: Simplify right side
    21,254.18x = 180,815,448.57
  5. Step 5: Solve for x
    x = 180,815,448.57/21,254.18
  6. Step 6: Final answer
    x = 8,507.29

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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.