Home / 21,828.60-32,699.70-11,950.20

Finding the Fourth Proportional to 21,828.60, 32,699.70 and 11,950.20

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Solution

The fourth proportional to 21,828.60, 32,699.70 and 11,950.20 is: 17,901.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.60 : 32,699.70 = 11,950.20 : x
  2. Step 2: Convert to fraction form
    21,828.60/32,699.70 = 11,950.20/x
  3. Step 3: Cross multiply
    21,828.60x = 32,699.70 × 11,950.20
  4. Step 4: Simplify right side
    21,828.60x = 390,767,954.94
  5. Step 5: Solve for x
    x = 390,767,954.94/21,828.60
  6. Step 6: Final answer
    x = 17,901.65

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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.