Home / 21,411.60-32,068.80-11,011.20

Finding the Fourth Proportional to 21,411.60, 32,068.80 and 11,011.20

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Solution

The fourth proportional to 21,411.60, 32,068.80 and 11,011.20 is: 16,491.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.60 : 32,068.80 = 11,011.20 : x
  2. Step 2: Convert to fraction form
    21,411.60/32,068.80 = 11,011.20/x
  3. Step 3: Cross multiply
    21,411.60x = 32,068.80 × 11,011.20
  4. Step 4: Simplify right side
    21,411.60x = 353,115,970.56
  5. Step 5: Solve for x
    x = 353,115,970.56/21,411.60
  6. Step 6: Final answer
    x = 16,491.81

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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.