Home / 21,218.68-31,810.60-9,364.04

Finding the Fourth Proportional to 21,218.68, 31,810.60 and 9,364.04

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Solution

The fourth proportional to 21,218.68, 31,810.60 and 9,364.04 is: 14,038.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.68 : 31,810.60 = 9,364.04 : x
  2. Step 2: Convert to fraction form
    21,218.68/31,810.60 = 9,364.04/x
  3. Step 3: Cross multiply
    21,218.68x = 31,810.60 × 9,364.04
  4. Step 4: Simplify right side
    21,218.68x = 297,875,730.82
  5. Step 5: Solve for x
    x = 297,875,730.82/21,218.68
  6. Step 6: Final answer
    x = 14,038.37

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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.