Home / 21,653.16-32,438.28-12,861.36

Finding the Fourth Proportional to 21,653.16, 32,438.28 and 12,861.36

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Solution

The fourth proportional to 21,653.16, 32,438.28 and 12,861.36 is: 19,267.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.16 : 32,438.28 = 12,861.36 : x
  2. Step 2: Convert to fraction form
    21,653.16/32,438.28 = 12,861.36/x
  3. Step 3: Cross multiply
    21,653.16x = 32,438.28 × 12,861.36
  4. Step 4: Simplify right side
    21,653.16x = 417,200,396.86
  5. Step 5: Solve for x
    x = 417,200,396.86/21,653.16
  6. Step 6: Final answer
    x = 19,267.41

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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.