Home / 15,918.78-21,961.34-9,632.10

Finding the Fourth Proportional to 15,918.78, 21,961.34 and 9,632.10

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Solution

The fourth proportional to 15,918.78, 21,961.34 and 9,632.10 is: 13,288.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.78 : 21,961.34 = 9,632.10 : x
  2. Step 2: Convert to fraction form
    15,918.78/21,961.34 = 9,632.10/x
  3. Step 3: Cross multiply
    15,918.78x = 21,961.34 × 9,632.10
  4. Step 4: Simplify right side
    15,918.78x = 211,533,823.01
  5. Step 5: Solve for x
    x = 211,533,823.01/15,918.78
  6. Step 6: Final answer
    x = 13,288.32

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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.