Home / 21,441.12-32,123.28-13,215.84

Finding the Fourth Proportional to 21,441.12, 32,123.28 and 13,215.84

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Solution

The fourth proportional to 21,441.12, 32,123.28 and 13,215.84 is: 19,800.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,441.12 : 32,123.28 = 13,215.84 : x
  2. Step 2: Convert to fraction form
    21,441.12/32,123.28 = 13,215.84/x
  3. Step 3: Cross multiply
    21,441.12x = 32,123.28 × 13,215.84
  4. Step 4: Simplify right side
    21,441.12x = 424,536,128.76
  5. Step 5: Solve for x
    x = 424,536,128.76/21,441.12
  6. Step 6: Final answer
    x = 19,800.09

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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.