Home / 25,758.90-35,547.66-15,687.81

Finding the Fourth Proportional to 25,758.90, 35,547.66 and 15,687.81

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Solution

The fourth proportional to 25,758.90, 35,547.66 and 15,687.81 is: 21,649.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,758.90 : 35,547.66 = 15,687.81 : x
  2. Step 2: Convert to fraction form
    25,758.90/35,547.66 = 15,687.81/x
  3. Step 3: Cross multiply
    25,758.90x = 35,547.66 × 15,687.81
  4. Step 4: Simplify right side
    25,758.90x = 557,664,936.02
  5. Step 5: Solve for x
    x = 557,664,936.02/25,758.90
  6. Step 6: Final answer
    x = 21,649.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.