Home / 15,913.48-21,954.08-10,869.60

Finding the Fourth Proportional to 15,913.48, 21,954.08 and 10,869.60

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Solution

The fourth proportional to 15,913.48, 21,954.08 and 10,869.60 is: 14,995.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.48 : 21,954.08 = 10,869.60 : x
  2. Step 2: Convert to fraction form
    15,913.48/21,954.08 = 10,869.60/x
  3. Step 3: Cross multiply
    15,913.48x = 21,954.08 × 10,869.60
  4. Step 4: Simplify right side
    15,913.48x = 238,632,067.97
  5. Step 5: Solve for x
    x = 238,632,067.97/15,913.48
  6. Step 6: Final answer
    x = 14,995.59

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1.5x scale

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.