Home / 21,256.07-31,870.43-10,162.51

Finding the Fourth Proportional to 21,256.07, 31,870.43 and 10,162.51

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Solution

The fourth proportional to 21,256.07, 31,870.43 and 10,162.51 is: 15,237.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256.07 : 31,870.43 = 10,162.51 : x
  2. Step 2: Convert to fraction form
    21,256.07/31,870.43 = 10,162.51/x
  3. Step 3: Cross multiply
    21,256.07x = 31,870.43 × 10,162.51
  4. Step 4: Simplify right side
    21,256.07x = 323,883,471.20
  5. Step 5: Solve for x
    x = 323,883,471.20/21,256.07
  6. Step 6: Final answer
    x = 15,237.23

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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.