Home / 21,122.64-31,683.84-14,528.88

Finding the Fourth Proportional to 21,122.64, 31,683.84 and 14,528.88

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Solution

The fourth proportional to 21,122.64, 31,683.84 and 14,528.88 is: 21,793.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.64 : 31,683.84 = 14,528.88 : x
  2. Step 2: Convert to fraction form
    21,122.64/31,683.84 = 14,528.88/x
  3. Step 3: Cross multiply
    21,122.64x = 31,683.84 × 14,528.88
  4. Step 4: Simplify right side
    21,122.64x = 460,330,709.30
  5. Step 5: Solve for x
    x = 460,330,709.30/21,122.64
  6. Step 6: Final answer
    x = 21,793.24

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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.