Home / 15,921.16-23,885.48-5,390.75

Finding the Fourth Proportional to 15,921.16, 23,885.48 and 5,390.75

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Solution

The fourth proportional to 15,921.16, 23,885.48 and 5,390.75 is: 8,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.16 : 23,885.48 = 5,390.75 : x
  2. Step 2: Convert to fraction form
    15,921.16/23,885.48 = 5,390.75/x
  3. Step 3: Cross multiply
    15,921.16x = 23,885.48 × 5,390.75
  4. Step 4: Simplify right side
    15,921.16x = 128,760,724.50
  5. Step 5: Solve for x
    x = 128,760,724.50/15,921.16
  6. Step 6: Final answer
    x = 8,087.40

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1.5x scale

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.