Home / 21,160.87-31,741.65-10,065.31

Finding the Fourth Proportional to 21,160.87, 31,741.65 and 10,065.31

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Solution

The fourth proportional to 21,160.87, 31,741.65 and 10,065.31 is: 15,098.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.87 : 31,741.65 = 10,065.31 : x
  2. Step 2: Convert to fraction form
    21,160.87/31,741.65 = 10,065.31/x
  3. Step 3: Cross multiply
    21,160.87x = 31,741.65 × 10,065.31
  4. Step 4: Simplify right side
    21,160.87x = 319,489,547.16
  5. Step 5: Solve for x
    x = 319,489,547.16/21,160.87
  6. Step 6: Final answer
    x = 15,098.13

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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.