Home / 15,810.40-23,716.08-5,422

Finding the Fourth Proportional to 15,810.40, 23,716.08 and 5,422

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Solution

The fourth proportional to 15,810.40, 23,716.08 and 5,422 is: 8,133.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,810.40 : 23,716.08 = 5,422 : x
  2. Step 2: Convert to fraction form
    15,810.40/23,716.08 = 5,422/x
  3. Step 3: Cross multiply
    15,810.40x = 23,716.08 × 5,422
  4. Step 4: Simplify right side
    15,810.40x = 128,588,585.76
  5. Step 5: Solve for x
    x = 128,588,585.76/15,810.40
  6. Step 6: Final answer
    x = 8,133.16

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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.